Nice, cute graphics. I dig the color scheme. I loved this kind of games in the early 2000s. If you decide to develop this further, I suggest getting the jump/speed loop where it is enjoyable for every number you get, and then giving player an additional boost of a different kind (better jump, better acceleration, time slowdown...) depending on what number they roll. This way, you can feel handicapped if you roll bad. Nice job getting this done in 48 hours!