From the Steam Store page:
Become a giant walking dice and battle to the end of an ever-changing dungeon! Can you escape the cruel whims of Lady Luck? Now featuring "Dicey Dungeons: Reunion", a free DLC with six brand-new episodes! (Check out the Reunion OST on Bandcamp!)

In this fast-paced deckbuilding roguelike from Terry Cavanagh (Super Hexagon, VVVVVV), Chipzel, and Marlowe Dobbe, you'll fight monsters, find better loot, level up your heroes, and maybe even take down the Goddess of Fortune, Lady Luck herself. Balance your carefully planned strategies against the unknown of a dice roll.