The third dimension in the house!!! This was awesome. The movement felt fluid and polished. I wanted to cruise in that toy boat and eat that banana so bad. Excellent entry. The ability is great, but perhaps you can add even more differentiation between being large and small other than your size (movement shifts or new abilities for each mode or something more than using it to squeeze between tight spaces).
But already this was really fun to mess around with and I can imagine you have some interesting puzzles in store for us. Great work.