Monstania is a simple tactical RPG. The player can control two characters in battle, switching between them. Characters can attack, defend, use items, heal, or use special techniques unique to each character. Recovering and techniques costs Ability Points (AP), which can be restored with items, standing still for a turn, or having the other character take an action. Every battle is story related and typically ends when either all the monsters are defeated or the characters reach a certain spot on the stage. Some stages require puzzles to be solved and do not have enemies, such as switch pressing or floor cleaning stages.