I like it! The mechanics feel great, and the stages are challenging. Just maybe the fact that reaching the end of the slope is bad feels weird or abticlimatic.

Maybe you could make a level selection page, make the levels completed by reaching the end, and using the tickets as collectibles to unlock a next "pack" of levels, like 1-10 you can play, if u want to play 11-20 you have to get 7 tickets, etc.

Really fun indeed! :D