If you like card games, buy Slay the Spire
If you like rogue-like games, buy Slay the Spire.
If you like card games and rogue-like games, Slay the Spire is the game you were looking for.
If you don't like card games nor rogue-like games, Slay the Spire is the game to change your opinion.

P.S.: Worth buying full-price. The developers deserve it.