I really like your interpretation of the theme, a rewinding toy in a toy story sort of aesthetic really fits and isn't something I've seen or would have thought of. Some of the mechanics (mostly the jumping) could use a little polish but I like the idea and theming enough that its still cool. Nice work.
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If you're looking for some advice on making good game jumps btw, here's a GDC talk that helped me with my game. It goes into some math/physics of it so it might be a lot if you haven't done that before but it helped me a lot and is a great resource: https://www.youtube.com/watch?v=hG9SzQxaCm8