What's here already is so polished and smooth, it was a real pleasure to play. The UI is nice and polished, and the physics system worked perfectly smoothly for me! I thought more upgrades would have added to the fun, but that's only seems natural in a 4-day game! The upgrades that are here seemed purposefully designed and solid. They were intuitive and synergized nicely, and I appreciate that you didn't try to quickly push out upgrades that didn't hit as hard as the others! Great game!