I'd really love to see more *stuff* in this game, plus maybe an additional mechanic than just saying yes/no (plus, that should be made a bit easier by automatically showing the next card, imho, moving the mouse around gets old quickly). A "replay" button would make sense. It's a bit too hard to actually lose without trying to, too. Apart from that, my only criticism is that you're apparently able to spend more credits than you have, which is weird.
All in all: A very nice experience though. Good job!