In deckbuilding games, you start with a simple set of cards and, as the game progresses, add new ones, remove weak ones, and create combinations that work together. The main thrill is finding a powerful combination from seemingly random cards. This genre flourished especially thanks to Slay the Spire.
No, the rules are explained as you go, and there aren't many cards at the start. If you like that, check out Card Roguelike and Card Battler.
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