Genuinely, unironically one of the best 3D platformers I've played in recent memory. Absolutely going to 100% this on and off.
Edit: I've 100%'d the game over the past couple days, still excellent. The only thing that's a bit frustrating is that the timing for the Super Boost (push Gas at the end of a spin) has really strict timing, and requires you to push it a bit later than expected. Also Morio's Dream was the hardest level to get all Gears and Golden Bunnies in easily, which isn't awful at first until you realize how out of the way one of the bunnies and one of the gears is. Beyond that though, I had a wonderful time with this game and my 9/10 still stands.
Edit: I've 100%'d the game over the past couple days, still excellent. The only thing that's a bit frustrating is that the timing for the Super Boost (push Gas at the end of a spin) has really strict timing, and requires you to push it a bit later than expected. Also Morio's Dream was the hardest level to get all Gears and Golden Bunnies in easily, which isn't awful at first until you realize how out of the way one of the bunnies and one of the gears is. Beyond that though, I had a wonderful time with this game and my 9/10 still stands.