Guild of Dungeoneering is described as 'brilliantly conceived dungeon crawler with the appeal of a tabletop card game. Players build a dungeon from playing cards, laying down rooms, monsters, traps and loot'. There are six games similar to Guild of Dungeoneering for a variety of platforms, including Windows, Steam, iPhone, iPad and Android Tablet. The best alternative is Slay the Spire. It's not free, so if you're looking for a free alternative, you could try Card Crawl or Night of the Full Moon. Other Guild of Dungeoneering like games are Royal Booty Quest (Paid), Blood Card (Paid) and Monster Slayers (Freemium).
Slay the Spire fuses card games and roguelikes together to make the best single player deckbuilder. Craft a unique deck, encounter bizarre creatures, discover relics of immense power, and Slay the Spire!
Night of the Full Moon is a deckbuilding card game casting players as Little Red Riding Hood in a dark adventure. In order to find the missing grandmother, Little Red Riding Hood went alone to the Black Forest, where it was always dark and night.
Blood Card is a card game that combines elements of roguelike and deckbuilding. During the game, you shall strive ahead, gathering cards to build a unique deck and use it to defeat the enemies getting in your way.