Monster Train is a roguelike deckbuilder where you defend a train's three vertical floors from invading forces trying to extinguish your pyre. Each run has you building a deck from two combined clans, placing units on different levels to intercept enemies climbing toward your goal. The vertical battlefield means you're constantly deciding which floor needs reinforcements and when to let threats through to conserve resources. Between battles, you upgrade cards, recruit units, and unlock artifacts that shape your strategy. The Wild Mutations update adds daily challenges and mutators that twist the rules. Friends & Foes introduced a sixth clan plus competitive multiplayer. Runs take 60-90 minutes, and the clan combinations create enough variety that you won't repeat strategies often.
