The character design looks nice, but that's honestly about it. The gameplay is frustrating and slow, especially because of how little the player is really aware of. It took a while to figure out that winning and losing ALWAYS happened in increments of $50.
The games themselves are too simple. RPS and the slot machine at least make sense because those games are as simple as they appear, but a bit of an animation showing the results of the game would be nice. Blackjack makes very little sense because you can't actually see what your cards are before selecting "hit me" or "stand." I also dislike that you default back to "rock paper scissors" when you're finished with a game.
The biggest issue is that there's no real strategy to speak of, or if there is, it's a single best strategy that is originally obscured from the player. I see that RPS is fast but has a 50/50 chance of winning, I see that the slots are slower but seem to make you lose money a bit more consistently, but among all three games one of them is going to have a highest chance to lose and once the player figures that out all they have to do is play that every time.