I do like the simplicity of this project.
A couple jump, few controls, and you have a little game that will make you keep trying a few times to get a higher score! And once you understand when to jump right, you can fit a few more spins than you'd expect into one try. I managed to get a high score of 350 from it!
I wasn't sure about the size of the sprites at the beginning, but fitting the whole slope into the screen gives some good sizing and contains the game rather well, I gotta say. I guess it's because like this you're less reacting to what comes up and more planning what you're gonna do when you get to a point of the slope.
The few tunes that play are also very nice and c64-ish, and it has that arcade "just try and try again to see how good you can get at it" feel that I can appreciate.
Overall, I like it!