Making a multiplayer game is actually very hard in a jam time so congratulations. I did not test the multiplayer part but if anybody find me on discord we can play the multiplayer games.
For solo play:
Controls:
I think non inverted should be the normal options. Also mouse controls were a little fast but I had a custom dpi mouse so it was fine for me. I did not understand why we should roll?
Gameplay:
What I miss in those ring racer games is that if you miss a ring you have to return back. Now this would not work for multiplayer prob but at least in solo play I wish the game also move to the next ring or accept the next ring even if we miss some. Of course leaderboard would be based on that.