Monster Train is a roguelike deck building combat game. You play as the Champions of Hell. All of your power is attached to the last surviving remnants of the Pyre that powers Hell. You have been tasked with leading the train that takes you straight to the core of the inferno. The only thing that is stopping you is the Gilded Wing. They attack you at every juncture, invading your train with a wave of high powered magical soldiers who fight their way up the four levels of your train to the last fragment of the Pyre. If the Pyre is destroyed, you lose. If you defeat the army, you are rewarded with new cards, new artifacts that grant different powers and abilities to your train, and the opportunity to choose your path through a variety of merchants and treasures leading to the final stop.