Slay the Spire is a game in which you climb The Spire, ascending its floors through three acts, encountering many enemies, bosses, and events along the way. The paths through each act all lead to a final floor where a challenging boss encounter awaits. The content of each floor and the available paths through each act are procedurally-generated, so each run will be a different experience.
Slay the Spire is a game primarily about survival, collecting cards, and building a powerful deck to wipe out your foes. Good luck and happy deckbuilding!
This game also has mods that you can download and play with via Steam Workshop.