Each modular expansion set introduces a new character, new tile types, new card types and all new game modes and mechanics which add additional depth to the Sub Terra core game!
Investigation Not all of you made it out alive. With the help of a mysterious corporation, return to the cave and search for your fallen friends.
Investigation adds 15 new item cards that grant your cavers powerful abilities. Recover them from the cave floor, or choose the ruthless Agent who starts fully equipped. The darkness hides many things.