You did a great job! Game feels polished and have smooth gameplay, idea with cards and four players on the table give nice alternate to "Buckshot Roulette", i think it can have good future. But i think u should add something strategic like it brings "Buckshot Roulette". For example, u could decrease time of the round and time-gap between players turns, so it will add more dynamic and intense for game. In addition, u can bring "reverse card" to reverse turns order, or "random turn" to add more adrenaline to players, that dont wait their turn will be next.
Really nice game, good luck with project!