X-COM: Terror From the Deep

ThemeWarfare Traitalien abduction Traitalien invasion Traitaliens Traitancient advanced civilization technology Traitaquatic Traitbase building Traitbird Traitbloody Traitcliffhanger Traitcorpse Traitcybernetics Traitdarkness Traitday/night cycle Traitdeath Traitdestructible environment Traitdifficulty level Traitdigital distribution Traiteconomy Traitexplosion Traitfaceless antagonist Traitgeoscape Traithidden room Traitinstant kill Traitliving inventory Traitlovecraftian Traitmacromanagement Traitmelee Traitmind control Traitmorale Traitmovement penalty Traitpermadeath Traitpixel art Traitplaystation mouse support Traitscientist Traitself-referential humor Traitsingle-player only Traitsoldier Traitsonic blast Traitspaceship Traitstat tracking Traitsteam Traitsubmarine Traittactical turn-based combat Traittank Traitterrorists Traitturn-based Traitufo Traitunderwater gameplay Traitvoice acting Traitwar Traitwater level Traitworking for the enemy