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

• Game renders‏‎ (1 member)
• Game screenshots‏‎ (4 members)
• Game series‏‎ (1 member)
• Game sprites‏‎ (3 members)
• Gameplay‏‎ (2 members)
• Games‏‎ (3 members)
• Help‏‎ (4 members)
• Human‏‎ (2 members)
• Human characters‏‎ (2 members)
• Icons‏‎ (3 members)
• Images‏‎ (6 members)
• Images by Craig Mullins‏‎ (2 members)
• Images by Reginald Djour‏‎ (2 members)
• Images by Robert Mclees‏‎ (3 members)
• Images by artist‏‎ (1 member)
• Images by copyright status‏‎ (1 member)
• Images by source‏‎ (1 member)
• Images by subject‏‎ (6 members)
• Images by type‏‎ (12 members)
• Images of Pfhor characters‏‎ (1 member)
• Images of characters‏‎ (2 members)
• Images of human characters‏‎ (1 member)
• Images of locations‏‎ (1 member)
• Images of planets‏‎ (2 members)
• Images of ships‏‎ (2 members)
• Images of species‏‎ (3 members)
• Images of technology‏‎ (2 members)
• Images of vehicles‏‎ (1 member)
• Images of weapons‏‎ (6 members)
• Indexed pages‏‎ (0 members)
• Infobox templates‏‎ (10 members)
• Locations‏‎ (2 members)
• Locations by era‏‎ (2 members)
• Logos‏‎ (3 members)
• Maintenance‏‎ (8 members)
• Manual images‏‎ (3 members)
• Marathon (1994) concept art‏‎ (1 member)
• Marathon (1994) images‏‎ (10 members)
• Marathon (1994) manual images‏‎ (5 members)
• Marathon (1994) screenshots‏‎ (2 members)
• Marathon (1994) sprites‏‎ (5 members)
• Marathon (1994) terminal images‏‎ (3 members)
• Marathon (202X) concept art‏‎ (1 member)
• Marathon (202X) images‏‎ (4 members)
• Marathon (202X) renders‏‎ (0 members)
• Marathon (202X) screenshots‏‎ (0 members)
• Marathon (reboot) concept art‏‎ (0 members)
• Marathon (reboot) images‏‎ (0 members)
• Marathon (reboot) screenshots‏‎ (0 members)
• Marathon 2: Durandal images‏‎ (11 members)