The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- ARTHER (2 members)
- ARTHER Upgrade (4 members)
- Articles that need pictures (2 members)
- Bars (15 members)
- Base defense (1 member)
- Blocks (12 members)
- Blog posts (1 member)
- Browse (8 members)
- Building (3 members)
- Candidates for deletion (0 members)
- Consumes Power (10 members)
- Craftable (30 members)
- Creative (9 members)
- Cryoplasm Defence (7 members)
- Crystal Lenses (6 members)
- Decoration (5 members)
- Defence (23 members)
- Disambiguations (0 members)
- Drill Motors (5 members)
- Drops (15 members)
- Enemies (4 members)
- Entities (11 members)
- Forced Induction (5 members)
- Forums (6 members)
- Frozen Factory (58 members)
- Fuel (4 members)
- Game mechanics (8 members)
- Gems (8 members)
- General (9 members)
- Generates Power (5 members)
- Generator (4 members)
- Guides (6 members)
- Help (3 members)
- Help desk (3 members)
- Images (0 members)
- Intact Organic Parts (8 members)
- Items (48 members)
- Jet Turbine (6 members)
- Lenses (13 members)
- Liquid (1 member)
- Logistic (8 members)
- Machines (75 members)
- Mass Storage (2 members)
- Mining (13 members)
- Multi-Block (9 members)
- NPC (1 member)
- Ores (13 members)
- Organic Lenses (3 members)
- Organic Parts (16 members)
- PCB (7 members)
- Pages with too many expensive parser function calls (1 member)
- Particle Filtration (8 members)
- Power (13 members)
- Refinery (2 members)
- Research (61 members)
- Ruined Organic Parts (7 members)
- Smelting (11 members)
- Sorting (4 members)
- SpiderBot (2 members)
- Sruvival (1 member)
- Storage (8 members)
- Stores Power (8 members)
- Stubs (2 members)
- Suit Upgrade (14 members)
- Survival (101 members)
- T3 (5 members)
- T4 (2 members)
- Template documentation (28 members)
- Templates (29 members)
- Tools (4 members)
- Transmitter (1 member)
- Transport (12 members)
- Turrets (1 member)
- Upgrades (1 member)
- Videos (1 member)
- Watercooler (3 members)