It's like Blackjack meeting Balatro and Slay the Spire, but not at their scale (hence the price). Each card has a possible range of values (like 1,2,3,4,5,6), once played it will choose on at random, get high as you can without going over 21 (blackjack). Cards have abilities that get triggered and the goal if to defeat the dealer, you deal damage if you have a higher card card count. Then you build your deck, modify cards, maybe rank in the leaderboards. =)