I did not see any credits on the game itself or the game page.
If you did everything in the game (programming, 3d modelling for the character and world, music, etc.) please state so. Otherwise, please credit the corresponding creators.
I couldn't see how the game fits with the theme of chain reactions. It would be interesting if you could chain tricks and get points or boosts for it, but the game seems to be onl limited to moving left and right. I couldn't find a jump key or anything else.
One more thing is that the "holes" in the road are very hard to see and it's not clear if you can pass them on the left or the right. Oh and after going for a while, the road starts breaking up and Doki gets stuck in between sections of the road. I could get her to keep rolling forward after wiggling her a bit left and right but after a while she just refused going over a ramp and that's where the run ended.
This game feels like a good starting point for something bigger but maybe you had to cut your scope short due to the time limit. Keep up the good work!