There's 5 card and u can only pick 1 per game, and the rest will became your enemy. the first plan was if player pick 1 card, that specific card will give u attribute that help you progress the game. the enemy was planned to be variated and had different attack mechanic. basically its survival game. i notice the resolution were too wide. if just i have more time, i could polish the game more.
anyway thanks for your feedback!