Sonic has such a pop to his movement, and his turning and general acceleration is just so natural. Bouncing on enemies feels just right, and the homing attack's compromise of halving the speed/height from before contact (but still retaining it, unlike other 3D Sonics) is brilliant. The camera work is some of the best I've seen in a fan effort (seriously, remarkable job there), and oh my god you managed to hit every note on how to make rolling feel good. You build up speed, you coast along, you feel like a fully maneuverable ball. It's excellent, and the effect given to it when passing a certain speed only improves that feeling tenfold. Fantastic job.
I played this engine for hours on hours, even with an empty map and only 4 enemy things to bop. Honestly, I feel like you've managed to make 3D Sonic work in a way much like Mario 64; a character so fun to move around that you can still have a good time even when put in a small, if not empty playing field.
(rest of the review in the img)
Grab the blue chaos emerald and try hitting the RB button (right click) again