I see you said you wanted to continue this, please do! It's super cute, and I love the concept! I had only the tiniest nitpick that didn't affect my enjoyment at all, just with the physics I think I'd prefer if you didn't slide down slopes, and if you travelled up slopes at the same speed as horizontal (the second one I know you could change by applying the force/velocity in the diagonal direction if going up a slope, instead of always just horizontally). Just tiny quirks of the physics system, but again I loved it!