You didn't explain how to use cards and what they do but that's not a problem. Really cool game for your first one! I was having some troubles as there wasn't a restart button if you are stuck (I was stuck on a level when I wasted a blue card at the beginning) and there's no audio or cool sprites but when it's your first game and you made it in less than 3 days it's nice.
Btw the theme wasn't followed