Slay the Spire is a roguelike deck-builder card game developed by Mega Crit Games. It was launched in Early Access on November 15, 2017. It is set in a dark fantasy universe where (so far) two characters must traverse maps and climb the Spire, killing monsters and enemies and three bosses, one for each act. There are currently two modes: the standard mode, which is the most difficult to master, and the daily mode, which makes progress somewhat less punishing by introducing modifiers that affect the mechanics in many possible ways. It is influenced by physical card games such as Dominion and Netrunner.