The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.

• 1970s games‏‎ (2 members)
• 1970s games - Images‏‎ (4 members)
• 1980s games‏‎ (5 members)
• 1980s games - Images‏‎ (119 members)
• 1990s games‏‎ (23 members)
• 1990s games - Image galleries‏‎ (1 member)
• 1990s games - Images‏‎ (574 members)
• 2000s games‏‎ (11 members)
• 2000s games - Image galleries‏‎ (4 members)
• 2000s games - Images‏‎ (346 members)
• 2000s games - Video galleries‏‎ (1 member)
• 2010s games‏‎ (12 members)
• 2010s games - Image galleries‏‎ (4 members)
• 2010s games - Images‏‎ (807 members)
• 2010s games - Video galleries‏‎ (1 member)
• 2020s games‏‎ (4 members)
• 2020s games - Images‏‎ (22 members)
• Administrators‏‎ (8 members)
• Anguirus‏‎ (10 members)
• Article management templates‏‎ (12 members)
• Article stubs‏‎ (387 members)
• Articles with broken citations‏‎ (1 member)
• Audio‏‎ (251 members)
• Bandai‏‎ (22 members)
• Banned User‏‎ (58 members)
• Baragon‏‎ (6 members)
• Battra‏‎ (5 members)
• Blog posts‏‎ (1,281 members)
• Books‏‎ (82 members)
• Bugs‏‎ (0 members)
• Bureaucrats‏‎ (1 member)
• Candidates for deletion‏‎ (0 members)
• Candidates for renaming‏‎ (1,168 members)
• Characters‏‎ (366 members)
• Chat Moderators‏‎ (1 member)
• Chibi Godzilla Raids Again episodes‏‎ (8 members)
• Citations needed‏‎ (15 members)
• Cleanup‏‎ (62 members)
• Color templates‏‎ (90 members)
• Comic series‏‎ (1 member)
• Comics‏‎ (116 members)
• Community‏‎ (6 members)
• Companies‏‎ (35 members)
• Concept Art‏‎ (1,254 members)
• Content‏‎ (20 members)
• Copyright templates‏‎ (2 members)
• Crossovers‏‎ (23 members)
• Dark Horse‏‎ (3 members)
• Dark Horse - Races‏‎ (1 member)
• Dark Horse Comics‏‎ (6 members)