I like the mechanic where you modify the deck, but I wasn't sure what all of the results from the mini-games did and which cards they effected. It might help to highlight cards that have been modified. The race mechanic is interesting, I like how it's random but balance, because if someone pull ahead early they have fewer cards to pull for the rest of the game. After the first race I got 4/5 biscuits but the continue button didn't work.
Good Job!