Critter Trap

Critter Trap is a building used to capture ground-based Critters. It functions as a passive capture device for species that traverse solid tiles; it does not operate on creatures that occupy water or open-air movement states. This limitation is universal and documented across localizations: Critter Traps cannot catch swimming Critters or flying Critters.

Because the trap only affects non-swimming, non-flying animals, it is effective against terrestrial species that move along floor tiles and through normal pathfinding. It will not register or capture any creature whose primary movement type is swimming or flying, nor will it capture creatures that are temporarily swimming or airborne while the trap is placed in an incompatible medium. Designers and players must therefore place Critter Traps in areas where target species commonly walk rather than in pools, open water, or open shafts where creatures glide or float.

• The trap’s capture eligibility excludes both swimming and flying movement types; any Critter classified with either movement behavior cannot be caught.
• Placement must be on solid ground frequented by the intended species; traps located in water or open-air corridors will fail to capture swimming or flying animals.
• This rule applies consistently across game localizations and species lists: aquatic and airborne Critters are immune to capture by Critter Traps.

No source material indicates exceptions to this rule or additional special-case behaviors. If you plan to collect specific species, verify that the species’ movement type is terrestrial before relying on Critter Traps.