Oh my god dude, this rules. I absolutely adore the art style, it was so cool when I realized that was a 3D model. Music is perfect to. The car driving system is genius. I love how much there is to learn about it, the way that you get into situations where you can't slow down for a wall or corner, or you have to throw it in reverse. The speed carrying through to the next level was also a nice touch. Would be good to get some juice like sounds + burnout particles.

Had a weird bug on one of my playthroughs where I had to knock over the same gem twice, and the doorway didn't open immediately after either (despite it being the last gem). It opened while offscreen.