Editing Sonic Adventure DX: Director's Cut (section)

===Gameplay difference===
*The Internet connection feature was removed. Very few of the downloadable content from the Dreamcast version, such as the Chao Garden's black market, additional voice packs and holiday-themed modifications, were included in the GameCube port. However, unlike the [[Sonic Adventure 2|sequel]], most of the online features were not incorporated into the GameCube game and remained exclusive.
*Many changes to the Chao System were made, such as more interaction with the Chao, the ability to see their stats, as well as changes to the appearance of the Chao. The ''[[Chao Adventure]]'' VMU minigame was removed (instead replaced with a [[Game Boy Advance]] connection feature). The Chao System was overall very similar to the one in ''[[Sonic Adventure 2: Battle]]''.
*The ability to skip cutscenes by pushing Start was added.
*A map, found on the pause menu while in Adventure Fields, was added. This is especially useful when navigating the Mystic Ruins jungle.
*The train used to transport from Station Square to Mystic Ruins is now blue instead of red as in the Dreamcast version.
*Some voice effects were changed like when Tails begins to fly or when Amy swings her hammer.
*The characters' mouth movements match up with their lines in each respective language. However, this seems to cause more graphical glitches (such as Tails sliding along the ground in Super Sonic's story in English). In the Dreamcast version, the lip-syncing did not match either language.
*Loading times are significantly shorter than in the Dreamcast version.
*In the opening title sequence, Tails has his mouth open when he flies by the shattering windows. His mouth is closed in the Dreamcast version.
*Knuckles' purple eyes are more prominent like in his official artwork.
*Knuckles' [[Maximum Heat Knuckles Attack]] has a new charging sound effect.
*Amy's boots are more rounded in the front, unlike the Dreamcast version where they were square tipped.
*E-102 Gamma's adventure mode is no longer permanently stuck at night after completing his story.
*In both the PC and GameCube versions, Sonic and Amy's eyelids are the same color as their fur unlike the Dreamcast version where they are the same color as their skin.
*In the original, their hands were one solid object with lines in them, while in the port, their fingers are separated from each other.
*The PC version does not include a variant of the [[Tiny Chao Garden]], and instead has a generic Chao transporter.
*Japanese language settings are set as the default in the Japanese region, which was not the case in ''Sonic Adventure International''.
*The [[Chaos Emerald]]s found in some of Sonic and Tails' Action Stages have shining effects in the Dreamcast version. This was removed in the ''Sonic Adventure DX'' port.
*In the Dreamcast version, the player could remove the overlay from the Pause screen by holding {{X Button (Dreamcast)}} + {{Y Button (Dreamcast)}}. This was removed in ''Sonic Adventure DX''.

====Action Stages====
<gallery type="slideshow" widths="225">
Sonic2-big.jpg|Part of [[Emerald Coast]], [[Dreamcast]]
Dx.jpg|Part of [[Emerald Coast]], [[Nintendo GameCube|GameCube]]
</gallery>
*'''[[Emerald Coast]]''':
**The skybox is now correctly centered around the player in the GameCube version.
**In the Dreamcast version, the water is attached to the skybox and moves with it. In the GameCube version, the water is rendered as fixed squares.
**The Action Stage has the same "shaded areas" effect as Station Square in the GameCube version.
**The palm trees with [[Kiki]]s on them were made shorter in the GameCube version.
<gallery type="slideshow" widths="225">
SonicAdventure_PortDifferences5.png|Part of [[Windy Valley]], [[Dreamcast]]
WVSONIC14.png|Part of [[Windy Valley]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences6.png|Part of [[Windy Valley]], [[Dreamcast]]
WVSONIC15.png|Part of [[Windy Valley]], [[Nintendo GameCube|GameCube]]
</gallery>
*'''[[Windy Valley]]''':
**A number of textures in the first section were made slightly darker in the GameCube version.
**The paths are not darkened in the GameCube version, but the grass was, leaving some odd cut-off when the two meet.
**The fog present when the tornado appears was significantly reduced in the GameCube version.
**Some wall textures in the first section were changed in the GameCube version.
**A [[Rhinotank]] that spawns under the floor can be found in the GameCube version in the section after the tornado.
<gallery type="slideshow" widths="225">
SonicAdventure_PortDifferences9.png|Part of [[Casinopolis]], [[Dreamcast]]
SonicAdventureDX_PortDifferences9.png|Part of [[Casinopolis]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences10.png|Part of [[Casinopolis]], [[Dreamcast]]
CASTAILS1.png|Part of [[Casinopolis]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences11.png|Part of [[Casinopolis]], [[Dreamcast]]
CASSONIC6.png|Part of [[Casinopolis]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences12.png|Part of [[Casinopolis]], [[Dreamcast]]
CASSONIC12.png|Part of [[Casinopolis]], [[Nintendo GameCube|GameCube]]
</gallery>
*'''[[Casinopolis]]''':
**The textures in the walls of the main area and the shower room were changed in the GameCube version.
**The "SHOWER ROOM" sign is thicker and uses a texture instead of reflective letters in the GameCube version.
**The lights around the lion sign now glow more than the Dreamcast version.
**In the Dreamcast version, the ring vault contains a slope. This was changed into three large steps in the GameCube version.
**The fog in the main area was reduced in the GameCube version.
**Invisible walls were added to the top of the pinball entrances to prevent Sonic from [[Spin Dash]]ing into Knuckles' area in the GameCube version.
**The walls in the upper half of the main hall were given collision when playing as Sonic in the GameCube version.
**The textures of the walls in Dilapidated Way were changed. Additionally, the trash piles were made greener and the map was given a blue fog in the GameCube version.
**The water in Dilapidated Way is no longer green in the GameCube version.
**Some of the walls on the [[777 Slots Pinball]] table were changed in the GameCube version.
**Sonic is no longer pinball-colored in neither the [[777 Slots Pinball]] table or [[Card & Pinball]] table in the GameCube version.
**The textures on the borders of the [[Card & Pinball]] table were changed in the GameCube version.
<gallery type="slideshow" widths="225">
SonicAdventure_PortDifferences13.png|Part of [[Icecap (Sonic Adventure)|Icecap]], [[Dreamcast]]
ICSONIC1.png|Part of [[Icecap (Sonic Adventure)|Icecap]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences14.png|Part of [[Icecap (Sonic Adventure)|Icecap]], [[Dreamcast]]
ICSONIC12.png|Part of [[Icecap (Sonic Adventure)|Icecap]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences15.png|Part of [[Icecap (Sonic Adventure)|Icecap]], [[Dreamcast]]
ICSONIC31.png|Part of [[Icecap (Sonic Adventure)|Icecap]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences53.png|Part of [[Icecap (Sonic Adventure)|Icecap]], [[Dreamcast]]
ICBIG1.png|Part of [[Icecap (Sonic Adventure)|Icecap]], [[Nintendo GameCube|GameCube]]
</gallery>
*'''[[Icecap (Sonic Adventure)|Icecap]]''':
**In the Dreamcast version, the Action Stage's textures are mainly blue and brown. This was changed to white and gray in the GameCube version.
**The lighting on the player is much brighter than in the Dreamcast version.
**An invisible wall was added around the bridge in the second section to prevent Sonic from clipping through the bridge easily in the GameCube version.
**The second section was given a slight gray fog in the GameCube version.
**The weakened collision at the beginning of the third section makes it possible to skip the snowboarding section in the GameCube version.
**Big's section in the Dreamcast version is set at night. In the GameCube version, it is set during the day.
<gallery type="slideshow" widths="225">
SonicAdventure_PortDifferences16.png|Part of [[Twinkle Park]], [[Dreamcast]]
Sonic in Twinkle Park 1.png|Part of [[Twinkle Park]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences17.png|Part of [[Twinkle Park]], [[Dreamcast]]
Sonic in Twinkle Park 7.png|Part of [[Twinkle Park]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences18.png|Part of [[Twinkle Park]], [[Dreamcast]]
SonicAdventureDX_PortDifferences18.png|Part of [[Twinkle Park]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences19.png|Part of [[Twinkle Park]], [[Dreamcast]]
TPSONIC48.png|Part of [[Twinkle Park]], [[Nintendo GameCube|GameCube]]
</gallery>
*'''[[Twinkle Park]]''':
**The textures in the first section were given a major redesign. The track was given a blue theme rather than a red one in the GameCube version.
**The beginning and the end of the first section were given transparent ceilings in the GameCube version.
**The tunnels on the cart track glow in the Dreamcast version. In the GameCube version, only a certain number of parts of them glow.
**The second section was given a brighter appearance and details, such as paths and red carpets, were added in the GameCube version.
**A column was added to the large pool area of the second section in the GameCube version.
**The fog in the second section was reduced in the GameCube version.
<gallery type="slideshow" widths="225">
SonicAdventure_PortDifferences22.png|Part of [[Red Mountain]], [[Dreamcast]]
RMSONIC1.png|Part of [[Red Mountain]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences23.png|Part of [[Red Mountain]], [[Dreamcast]]
SonicAdventureDX_PortDifferences23.png|Part of [[Red Mountain]], [[Nintendo GameCube|GameCube]]
</gallery>
*'''[[Red Mountain]]''':
**The amount of color in most textures was reduced in the GameCube version, including the grass and crates.
**The second section was given more fog and is overall less shiny than in the Dreamcast version.
**The eyes on the lava platforms in the second section do not glow in the GameCube version.
<gallery type="slideshow" widths="225">
SonicAdventure_PortDifferences24.png|Part of [[Sky Deck]], [[Dreamcast]]
SonicAdventureDX_PortDifferences24.png|Part of [[Sky Deck]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences31.png|Part of [[Sky Deck]], [[Dreamcast]]
SonicAdventureDX_PortDifferences31.png|Part of [[Sky Deck]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences25.png|Part of [[Sky Deck]], [[Dreamcast]]
SonicAdventureDX_PortDifferences25.png|Part of [[Sky Deck]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences26.png|Part of [[Sky Deck]], [[Dreamcast]]
SonicAdventureDX_PortDifferences26.png|Part of [[Sky Deck]], [[Nintendo GameCube|GameCube]]
</gallery>
*'''[[Sky Deck]]''':
**Many platforms had their textures changed from yellow to blue in the GameCube version.
**The lighting does not change when the clouds get darker in the GameCube version.
**The clouds that pass through Sky Deck are stationary in the GameCube version.
**A thin gray fog was added in the third section in the GameCube version.
<gallery type="slideshow" widths="225">
SonicAdventure_PortDifferences30.png|Part of [[Final Egg]], [[Dreamcast]]
SonicAdventureDX_PortDifferences30.png|Part of [[Final Egg]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences32.png|Part of [[Final Egg]], [[Dreamcast]]
SonicAdventureDX_PortDifferences32.png|Part of [[Final Egg]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences33.png|Part of [[Final Egg]], [[Dreamcast]]
SonicAdventureDX_PortDifferences33.png|Part of [[Final Egg]], [[Nintendo GameCube|GameCube]]
</gallery>
*'''[[Final Egg]]''':
**An [[Egg Keeper]] at the beginning of Final Egg was removed in the GameCube version.
**The Dreamcast version of Final Egg has many yellow elements in the first and third section, but the GameCube version replaces it with darker elements.
**A [[Capsule]] sitting out of bounds was removed in the GameCube version.
**The ceiling in the large vertical area in the second section was made entirely black in the GameCube version.
**An invisible wall was removed behind the entrance to the second section, making it possible to [[Spin Dash]] out of bounds.
<gallery type="slideshow" widths="225">
SonicAdventure_PortDifferences34.png|Part of [[Hot Shelter]], [[Dreamcast]]
SonicAdventureDX_PortDifferences34.png|Part of [[Hot Shelter]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences35.png|Part of [[Hot Shelter]], [[Dreamcast]]
SonicAdventureDX_PortDifferences35.png|Part of [[Hot Shelter]], [[Nintendo GameCube|GameCube]]
</gallery>
*'''[[Hot Shelter]]''':
**The water in the first section was made brighter and less green in the GameCube version.
**The lighting was made brighter in the GameCube version.
**The center of the drainage room was given a border texture in the GameCube version.
**Some red elements in the second section were changed to blue in the GameCube version.
<gallery type="slideshow" widths="225">
SonicAdventure_PortDifferences46.png|Sand Hill, [[Dreamcast]]
SonicAdventureDX_PortDifferences46.png|Sand Hill, [[Nintendo GameCube|GameCube]]
</gallery>
*'''[[Sand Hill]]''':
**Shadows are present along the Action Stage's walls in the GameCube version.
<gallery type="slideshow" widths="225">
SonicAdventure_PortDifferences51.png|[[Sky Deck]] Act 1, [[Dreamcast]]
SonicAdventureDX_PortDifferences51.png|[[Sky Deck]] Act 1, [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences52.png|[[Sky Deck]] Act 2, [[Dreamcast]]
SonicAdventureDX_PortDifferences52.png|[[Sky Deck]] Act 2, [[Nintendo GameCube|GameCube]]
</gallery>
*'''[[Sky Chase]]''':
**Due to the lack of Z-layering in the GameCube version, the Egg Carrier is not visible until it enters the Skybox in Act 1.
**There is more of a shadow underneath the Egg Carrier in the GameCube version.
**The lighting in the second section is brighter.
<gallery type="slideshow" widths="225">
SonicAdventure_PortDifferences36.png|The start of [[Twinkle Circuit]], [[Dreamcast]]
SonicAdventureDX_PortDifferences36.png|The start of [[Twinkle Circuit]], [[Nintendo GameCube|GameCube]]
</gallery>
*'''[[Twinkle Circuit]]''':
**The stage was redesigned mainly with green colors. The now unused DLC courses were not updated for the GameCube version.
**The lighting was modified significantly in a similar way to Twinkle Park's track of this version of the game.
*[[Speed Highway]]'s entrance has different textures:
**In the GameCube version, the searchlights are visible from farther distances.
**In the "Goin' Down" section, the Dreamcast version included two circles of Rings at the bottom of the section. Those were removed from ''Sonic Adventure DX'', presumably because it is practically impossible to obtain any of them.
***In the Dreamcast version, all background sounds stop after Sonic reaches the bottom. In ''Sonic Adventure DX'', the sounds keep playing.
***The potted plants received a minor visual upgrade for ''Sonic Adventure DX'' and the lighting is slightly brighter.
<gallery type="slideshow" widths="200">
SonicAdventure_LostWorld.png|Part of [[Lost World]], [[Dreamcast]]
SonicAdventureDX_LostWorld.png|Part of [[Lost World]], [[Nintendo GameCube|GameCube]]
SonicAdventure_LostWorldFog.png|Part of [[Lost World]], [[Dreamcast]]
SonicAdventureDX_LostWorldFog.png|Part of [[Lost World]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences27.png|Part of [[Lost World]], [[Dreamcast]]
SonicAdventureDX_PortDifferences27.png|Part of [[Lost World]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences28.png|Part of [[Lost World]], [[Dreamcast]]
SonicAdventureDX_PortDifferences28.png|Part of [[Lost World]], [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences29.png|Part of [[Lost World]], [[Dreamcast]]
SonicAdventureDX_PortDifferences29.png|Part of [[Lost World]], [[Nintendo GameCube|GameCube]]
</gallery>
*'''[[Lost World]]''':
**The stage's entrance on the Dreamcast version has more foliage, some of which grew on the walls and ceiling. This was reduced in ''Sonic Adventure DX'', along with the shade of the grass.
**The entrance to the next area was changed from a square entrance to a rounded arch in ''Sonic Adventure DX''.
**Most of the area's textures are slightly different.
**The walls of the rivulet are thicker in ''Sonic Adventure DX''.
**In the entrance to the Snake Room, the fog color was changed from a blinding white in the Dreamcast version to a more subdued dark gray in ''Sonic Adventure DX''.
***The textures are slightly different, especially on the central circular structure. It is slightly more colorful in ''Sonic Adventure DX''.
**The fog color was changed noticeably; from a somewhat-blinding white in the Dreamcast version to a more subdued dark gray in the GameCube version.
**The textures on the walls of various parts of the stage and the [[Lit Panel]] room in the second section were changed in the GameCube version.
**The Dreamcast version maps a ground texture to [[bottomless pit]]s, while the GameCube version uses a fog texture.

====Station Square====
[[Station Square (Sonic Adventure)|Station Square]] was overhauled for the GameCube version. Most of the buildings and features were redesigned or retextured, and were revamped with a much higher quality than the other areas of the game.

*The Hotel District Entrance from the Central District has several changes:
**Different textures can be seen on the building.
**It is possible to see a bit further into the garage in the original version compared to this port.
**The reflections on the doors are differently arranged, but they depict the original Dreamcast colors, even on the GameCube version.
**The road was changed from dark blue to more realistic gray asphalt. Similarly, the yellowish sidewalk was changed to a duller gray.
{|class="wikitable" style="margin: 1em auto 1em auto;"
!''Sonic Adventure''
!''Sonic Adventure DX''
|-
|style="text-align: center;"|[[File:SA_HotelFront.png|200px]]
|style="text-align: center;"|[[File:SADX_HotelFront.png|200px]]
|}
*The Casino District has several differences in comparison to the Dreamcast version:
**The walkway is more transparent in the original version, and has more arch supports.
**The sign on the burger shop (the colorful building near the back) was changed in this version.
**The reflections on the hotel doors (back) are darker in this version.
**A sign for "Ken's Play Room" was added next to the entrance to Casinopolis in the GameCube version.
*The train's station has different textures between the two versions in addition to the train itself being blue in the GameCube version instead of red like in the Dreamcast version.
{|class="wikitable" style="margin: 1em auto 1em auto;"
!''Sonic Adventure''
!''Sonic Adventure DX''
|-
|[[File:SA_CasinopolisArea.png|200px]]
|[[File:SADX_CasinopolisArea.png|200px]]
|-
|[[File:SonicAdventure_StationSquareCasino1.png|200px]]
|[[File:SonicAdventureDX_StationSquareCasino1.png|200px]]
|-
|[[File:SonicAdventure_StationSquareCasino2.png|200px]]
|[[File:SonicAdventureDX_StationSquareCasino2.png|200px]]
|}
*In the City Hall District:
**City Hall had a major redesign; its clock tower from the original version was replaced with a copy of the building's lower segment in this version.
**The buildings around City Hall were also given redesigns.
{|class="wikitable" style="margin: 1em auto 1em auto;"
!''Sonic Adventure''
!''Sonic Adventure DX''
|-
|[[File:SonicAdventure StationSquareCityHall1.png|200px]]
|[[File:SonicAdventureDX StationSquareCityHall1.png|200px]]
|-
|[[File:SonicAdventure StationSquareCityHall2.png|200px]]
|[[File:SonicAdventureDX StationSquareCityHall2.png|200px]]
|}
*In the Sewer:
**The water uses a murky green texture rather than the clearer one from the Dreamcast version.
**The large box in this area was retextured in the GameCube version.
{|class="wikitable" style="margin: 1em auto 1em auto;"
!''Sonic Adventure''
!''Sonic Adventure DX''
|-
|[[File:SonicAdventure_StationSquareSewer.png|200px]]
|[[File:SonicAdventureDX_StationSquareSewer.png|200px]]
|}
*In the Hotel:
**The Hotel's interior is no longer dark at night in the GameCube version.
**The Hotel's interior and exterior were re-textured for the GameCube version.
**The buttons used to reach the [[Crystal Ring]] are now horizontal instead of vertical.
{|class="wikitable" style="margin: 1em auto 1em auto;"
!''Sonic Adventure''
!''Sonic Adventure DX''
|-
|[[File:SonicAdventure_StationSquareHotel1.png|200px]]
|[[File:SonicAdventureDX_StationSquareHotel1.png|200px]]
|-
|[[File:SonicAdventure_StationSquareHotel2.png|200px]]
|[[File:SonicAdventureDX_StationSquareHotel2.png|200px]]
|}
*[[Twinkle Park]]'s entrance has a more colorful design than in the Dreamcast version.
{|class="wikitable" style="margin: 1em auto 1em auto;"
!''Sonic Adventure''
!''Sonic Adventure DX''
|-
|[[File:SonicAdventure_StationSquareTwinkle.png|200px]]
|[[File:SonicAdventureDX_StationSquareTwinkle.png|200px]]
|}

====Egg Carrier====
<gallery type="slideshow" widths="200">
SonicAdventure_EggCarrierExterior.png|The exterior, [[Dreamcast]]
SonicAdventureDX_EggCarrierExterior.png|The exterior, [[Nintendo GameCube|GameCube]]
SonicAdventure_EggCarrierCaptain.png|The Captain Room, [[Dreamcast]]
SonicAdventureDX_EggCarrierCaptain.png|The Captain Room, [[Nintendo GameCube|GameCube]]
SonicAdventure_EggCarrierLiving1.png|The Private Room entrance, [[Dreamcast]]
SonicAdventureDX_EggCarrierLiving1.png|The Private Room entrance, [[Nintendo GameCube|GameCube]]
SonicAdventure_EggCarrierLiving2.png|The Playroom, [[Dreamcast]]
SonicAdventureDX_EggCarrierLiving2.png|The Playroom, [[Nintendo GameCube|GameCube]]
SonicAdventure_EggCarrierLiving3.png|The Study, [[Dreamcast]]
SonicAdventureDX_EggCarrierLiving3.png|The Study, [[Nintendo GameCube|GameCube]]
SonicAdventure_EggCarrierPool2.png|The pool area, [[Dreamcast]]
SonicAdventureDX_EggCarrierPool1.png|The Pool, [[Nintendo GameCube|GameCube]]
SonicAdventure_EggCarrierPool1.png|The Pool, [[Dreamcast]]
SonicAdventureDX_EggCarrierPool2.png|The Pool, [[Nintendo GameCube|GameCube]]
SonicAdventure_EggCarrierHall.png|The Egg Carrier Hall, [[Dreamcast]]
SonicAdventureDX_EggCarrierHall.png|The Egg Carrier Hall, [[Nintendo GameCube|GameCube]]
SonicAdventure_HedgehogHammer.png|The Torture Chamber, [[Dreamcast]]
SonicAdventureDX_HedgehogHammerAdv.png|The Torture Chamber, [[Nintendo GameCube|GameCube]]
SonicAdventureDX_HedgehogHammerSub.png|The minigame, [[Nintendo GameCube|GameCube]]
SonicAdventure_EggCarrierPrison.png|The Prison Room, [[Dreamcast]]
SonicAdventureDX_EggCarrierPrison.png|The Prison Room, [[Nintendo GameCube|GameCube]]
SonicAdventure_EggCarrierArmory1.png|The Arsenal, [[Dreamcast]]
SonicAdventureDX_EggCarrierArmory1.png|The Arsenal, [[Nintendo GameCube|GameCube]]
SonicAdventure_EggCarrierArmory2.png|The Arsenal, [[Dreamcast]]
SonicAdventureDX_EggCarrierArmory2.png|The Arsenal, [[Nintendo GameCube|GameCube]]
SonicAdventure_EggCarrierReservoir.png|The Water Tank, [[Dreamcast]]
SonicAdventureDX_EggCarrierReservoir.png|The Water Tank, [[Nintendo GameCube|GameCube]]
SonicAdventure_EggCarrierWarp.png|The Warp Hall, [[Dreamcast]]
SonicAdventureDX_EggCarrierWarp.png|The Warp Hall, [[Nintendo GameCube|GameCube]]
</gallery>
In the Dreamcast version, the [[Egg Carrier (Sonic Adventure)|Egg Carrier]] has a prominent green tint. This is not present in the GameCube version since many of the green features (such as lights and glass) are replaced with blue ones.
*The exterior of the ship contains a number of changes:
**The Monorail station has a scrolling icon of the Monorail on its lights in the Dreamcast version. This was removed in the GameCube version.
**The color of the Monorail station's light on the exterior was changed from green to blue in the GameCube version.
**Fog was added to the exterior area in the GameCube version.
*The Captain Room has parts of the chair inside of it that were removed in the GameCube version.
*The Private Room has some minor texture differences; one of the textures on the wall in the entrance area is upside-down, three colors on the checkerboard texture on the rockets in the Study were changed from red to blue, and one of the textures on the ceiling of the Playroom was changed in the GameCube version.
*Pool:
**The lights on the wall around the pool area are more rounded in the GameCube version.
**The textures on the walls in the pool area were changed slightly in the GameCube version.
*The main hall's [[Hint Box]]es are no longer purple in the GameCube version.
*In the Dreamcast version, doors in the main hall have reflective green barriers to indicate you cannot enter them. These are gone in the GameCube version.
*Torture Chamber:
**Parts of the [[Adventure Field]] version of the room were removed in the GameCube version.
**The subgame version of the room has a number of incorrect textures in the GameCube version. This does not happen in the Dreamcast version of the subgame.
*The Prison Room's lights above the cells were changed from green to blue in the GameCube version.
*E-102 Gamma's Arsenal and Water Tank rooms have noticeably different lighting between the two versions.
*The Warp Hall was given a number of texture changes in the GameCube version.

====Mystic Ruins====
<gallery type="slideshow" widths="200">
SonicAdventure_MysticRuinsMain1.png|Part of the Station Area, [[Dreamcast]]
SonicAdventureDX_MysticRuinsMain1.png|Part of the Station Area, [[Nintendo GameCube|GameCube]]
SonicAdventure_MysticRuinsMain2.png|Part of the Station Area, [[Dreamcast]]
SonicAdventureDX_MysticRuinsMain2.png|Part of the Station Area, [[Nintendo GameCube|GameCube]]
SonicAdventure_MysticRuinsMain3.png|Part of the Station Area, [[Dreamcast]]
SonicAdventureDX_MysticRuinsMain3.png|Part of the Station Area, [[Nintendo GameCube|GameCube]]
SonicAdventure_MysticRuinsAngel1.png|Part of the Angel Island Area, [[Dreamcast]]
SonicAdventureDX_MysticRuinsAngel1.png|Part of the Angel Island Area, [[Nintendo GameCube|GameCube]]
SonicAdventure_MysticRuinsAngel2.png|Part of the Angel Island Area, [[Dreamcast]]
SonicAdventureDX_MysticRuinsAngel2.png|Part of the Angel Island Area, [[Nintendo GameCube|GameCube]]
SonicAdventure_MysticRuinsAngel3.png|Part of the Angel Island Area, [[Dreamcast]]
SonicAdventureDX_MysticRuinsAngel3.png|Part of the Angel Island Area, [[Nintendo GameCube|GameCube]]
SonicAdventure_MysticRuinsJungle1.png|Part of the Jungle Area, [[Dreamcast]]
SonicAdventureDX_MysticRuinsJungle1.png|Part of the Jungle Area, [[Nintendo GameCube|GameCube]]
SonicAdventure_MysticRuinsJungle2.png|Part of the Jungle Area, [[Dreamcast]]
SonicAdventureDX_MysticRuinsJungle2.png|Part of the Jungle Area, [[Nintendo GameCube|GameCube]]
SonicAdventure_MysticRuinsBase1.png|Part of Eggman's base, [[Dreamcast]]
SonicAdventureDX_MysticRuinsBase1.png|Part of Eggman's base, [[Nintendo GameCube|GameCube]]
SonicAdventure_MysticRuinsBase2.png|Part of Eggman's base, [[Dreamcast]]
SonicAdventureDX_MysticRuinsBase2.png|Part of Eggman's base, [[Nintendo GameCube|GameCube]]
</gallery>
*In the Mystic Ruins Station Area:
**The main area was heavily redesigned in the GameCube version to have a lighter appearance than in the Dreamcast version. Curiously, these changes were not applied to the other parts of the adventure field.
**The waterfall is different between the two versions.
*In the Mystic Ruins Angel Island:
**The walls in this area are lined with trees in the original version. These were removed in the GameCube version.
**The top of the walls surrounding the area were more jagged in the GameCube version.
*In the Mystic Ruins Jungle Area:
**The paths can be seen through the canopy of the jungle in the GameCube version.
**The color of the water is different in the GameCube version from the Dreamcast version.
**In the Dreamcast version, fog will appear while roaming the jungle itself. The fog was removed in the GameCube version.
*In Eggman's base:
**The glass tubes containing the robotic Sonics are made brighter in the GameCube version.
**The lower area received a slight redesign in the GameCube version.

====Bosses====
<gallery type="slideshow" widths="200">
SonicAdventure PortDifferences40.png|Chaos 0's battle, [[Dreamcast]]
SonicAdventureDX PortDifferences40.png|Chaos 0's battle, [[Nintendo GameCube|GameCube]]
SonicAdventure PortDifferences41.png|Chaos 2's battle, [[Dreamcast]]
SonicAdventureDX PortDifferences41.png|Chaos 2's battle, [[Nintendo GameCube|GameCube]]
SonicAdventure PortDifferences42.png|Chaos 4's battle, [[Dreamcast]]
SonicAdventureDX PortDifferences42.png|Chaos 4's battle, [[Nintendo GameCube|GameCube]]
SonicAdventure PortDifferences43.png|Chaos 6's battle, [[Dreamcast]]
SonicAdventureDX PortDifferences43.png|Chaos 6's battle, [[Nintendo GameCube|GameCube]]
SonicAdventure PortDifferences37.png|Perfect Chaos, [[Dreamcast]]
SonicAdventureDX PortDifferences37.png|Perfect Chaos, [[Nintendo GameCube|GameCube]]
SonicAdventure PortDifferences38.png|Part of Perfect Chaos's arena, [[Dreamcast]]
SonicAdventureDX PortDifferences38.png|Part of Perfect Chaos's arena, [[Nintendo GameCube|GameCube]]
SonicAdventure PortDifferences39.png|Part of Perfect Chaos's arena, [[Dreamcast]]
SonicAdventureDX PortDifferences39.png|Part of Perfect Chaos's arena, [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences48.png|The Egg Hornet, [[Dreamcast]]
SonicAdventureDX_PortDifferences48.png|The Egg Hornet, [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences49.png|The Egg Walker, [[Dreamcast]]
SonicAdventureDX_PortDifferences49.png|The Egg Walker, [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences50.png|The Egg Viper, [[Dreamcast]]
SonicAdventureDX_PortDifferences50.png|The Egg Viper, [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences44.png|E-101 Beta's battle, [[Dreamcast]]
SonicAdventureDX_PortDifferences44.png|E-101 Beta's battle, [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences45.png|E-101 Mark II's battle, [[Dreamcast]]
SonicAdventureDX_PortDifferences45.png|E-101 Mark II's battle, [[Nintendo GameCube|GameCube]]
SonicAdventure_PortDifferences47.png|ZERO's battle, [[Dreamcast]]
SonicAdventureDX_PortDifferences47.png|ZERO's battle, [[Nintendo GameCube|GameCube]]
</gallery>
*In [[Chaos 0]] battle:
**The map was updated to match the redesigned City Hall for the GameCube version.
*In [[Chaos 2]] battle:
**Chaos 2 is darker.
**The glass around the perimeter of the boss arena is more opaque in the GameCube version, making it hard to see the city background behind it.
*In [[Chaos 4]] battle:
**Many textures were changed for the GameCube version, including the walls and trees around the boss arena.
**The pond's water is clearer and less green in the GameCube version.
**The pond does not switch to a "purified" texture when Chaos 4 is not swimming in it in the GameCube version.
*In [[Chaos 6]] battle:
**The fog is made thicker in the GameCube version.
**Chaos 6 is more opaque in the GameCube version.
*In [[Perfect Chaos (Sonic Adventure)|Perfect Chaos]] battle:
**The buildings around the boss arena were revamped heavily, receiving entirely different models and textures in the GameCube version.
**Waterfalls were added to a number of buildings in the GameCube version.
**A section of destroyed road at the starting point of the boss arena was removed from the GameCube version.
**Perfect Chaos is considerably brighter in the GameCube version.
**More fog was added in the GameCube version.
**The road segments are darker in the GameCube version.
**The water has a slightly dirtier color in the GameCube version.
*In the [[Egg Hornet]] battle:
**The map was updated to match the redesigned Mystic Ruins Station Area in the GameCube version.
**The lighting is much brighter in the GameCube version.
**Fog was added in the GameCube version.
*In the [[Egg Walker]] battle:
**The map was updated to match the redesigned Station Square in the GameCube version.
**"The Man 3" billboard was changed to a "Chao in Space" billboard in the GameCube version.
**Eggman is very brightly lit in the GameCube version.
**The Hotel's doors are not present in the GameCube version.
*In the [[Egg Viper]] battle:
*The color scheme for the platforms and the walls of the arena appears to have swapped colors in the GameCube version.
*In [[E-101 Beta]] battle:
**The map was updated to match the redesigned base.
**The green tint on the characters is removed in the GameCube version.
*In the [[E-101 Mark II]] and [[E-100 ZERO]] battles:
**The lighting is changed, and both bosses are noticeably shinier in the GameCube version.
**Fog was added in the GameCube version.