Being able to play other games in the phone is the craziest an most unique thing ever. It's literally pure wizardry.
That said, the visuals were pretty nice, I loved the amount of different snail variations. The audio on the other hand, could've been a better imo. I feel like there was kinda a lack of sfx. And some music would've been nice for sure. Though i suppose i could also just play a game and use that as the background music (which is what i actually did lol).
On the gameplay side of things, I loved the different functionalities of the phone, and the fact that there's games on the phone means i could pass time while waiting for the snail race, which is really relatable to real life lol.
Next, imo the initial training fee of 500 is rather high... like i gotta play lots of games, or get quite lucky with the races.
Also, you could just cheat the game by opening a game on the phone and then just leaving it there. Not sure if this can be done, but maybe you could detect interactions (keys pressed, mouse moved, etc) and if there hasn't been anything for quite some time, stop the player from earning money through games until they interact again.
Other than that, pretty cool game overall, and playing my game in there was really cool lol :D