On mobile it feels like the swipe threshold is to high - I find myself having to swipe across pretty much the whole screen to get the player to move! That makes the game incredibly difficult.
I think the whole thing also feels quite slow, generally games like this make the player feel like a speed demon narrowly avoiding obstacles. When I crashed in this game, it generally felt out of my control rather than because I had made a mistake.
The leaderboard didn't work unfortunately! You should check out Unity's leaderboard service, it works really well and is incredibly quick to implement 😊 I did it in about 10 minutes for this jam!
I liked that you can customise the skis, and having controls for music and sound effects is great in a jam, though I felt like the UI was incredibly small and not designed for mobile.
The graphics were great, though! Good job there 😁