I have some things to say.
First, extra points for the Linux port, check.
Second, aesthetically, i like it. The ice texture, the colors, the snow, everything contributes pretty well to the environment.
But I have to be critical about the game playability. A restart button would be great, and the fact that every time that I collide with something I start to go backwards and have a hard time gaining the momentum makes the game a lot less pleasant to play. Also when it flips over, it's really awkward, because, I just stay there.
Finally, little tutorial screens or even a readme in your folder saves time for your player. Maybe not everything that is intuitive to you may be to them.
Good luck in the voting and keep developing :3