The idea could work, basically a collection of minigames accesible via a small hub world. The atmosphere is nice, problem is, with only one minigame being available, and the high price of the gifts, the game in its current state is too grindy! This probably would be fixed when more minigames are added and the hub world is expanded upon. I would probably recommend adding some tickets that can be found just by exploring the hub world, so it serves more of a function than giving you access to the minigames. Also, it is very jarring and cumbersome that you spawn at the start of the hub world after exiting any door, should make it so you spawn at the door you just went into. Good luck and hope you can develop this further!