The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 1991 (3 members)
- 1992 (1 member)
- 1993 (5 members)
- 1994 (4 members)
- 1995 (3 members)
- 1996 (2 members)
- 1997 (1 member)
- 1998 (2 members)
- 1999 (2 members)
- 2000 (1 member)
- 2001 (5 members)
- 2002 (2 members)
- 2003 (4 members)
- 2004 (3 members)
- 2005 (2 members)
- 2006 (5 members)
- 2007 (3 members)
- 2008 (6 members)
- 2009 (1 member)
- 2010 (3 members)
- 2011 (5 members)
- 2012 (3 members)
- 2013 (3 members)
- 2014 (1 member)
- 2015 (1 member)
- 2016 (2 members)
- 2017 (4 members)
- 2018 (1 member)
- 2019 (3 members)
- 2020 (4 members)
- 2020s (1 member)
- 2021 (2 members)
- 2022 (6 members)
- 2023 (5 members)
- 2024 (3 members)
- 2D platformers (17 members)
- 3D platformers (14 members)
- Adventures of Sonic the Hedgehog (1 member)
- Advisory rating organizations (1 member)
- Aircraft (1 member)
- All namespace redirect templates (3 members)
- Alternate versions and ports (8 members)
- Amy Rose (1 member)
- Ancients (2 members)
- Animation templates (1 member)
- Anthropomorphic animals (1 member)
- Antiheroes (8 members)
- Arcade games (4 members)
- Archie (1 member)
- Articles in need of attention (1 member)