The atmosphere of the game is very dark and sinister but the character and trail really work there. The controls are very smooth too, fantastic work! 
You can still work on the game and I'd love to come back to it once you've developed it a bit more.

If you have time, I'd love if you tried my game.

Hmm, so from my understanding there are barriers that disappear when you kill yourself on certain spikes? I think including some more information in-game about how it works would help greatly. The live/die markers are a start, but they don't do enough to tell me why I'd want to die. I enjoyed the movement of the ball as well as the trail it left behind. The dark atmosphere made the trail stand out very nicely. Side note, I didn't see the menu you have as your second screenshot in game. I completed two levels and it put me back to the title screen. Is there something I missed?