Visually very impressive - although my PC is rubbish so I could only play comfortably on the lower quality. I'm always impressed by what you can do with 3D in GameMaker Xor!
The game play leaves a lot to be desired though. It's quite buggy - after each run through I have to close the game and re-open it because it stops counting when I go through the rings. And the font does not get reset between playing the game and going back to the instructions screen so the instructions are suddenly a lot bigger :P