The art of the blue and red guy looks great, but the rest not so much. I also found the music to be pretty repetitive (very short loop and only one instrument). Also, I wasn't sure what to do and the jumping didn't work very well.
Thank you for the feedback - the jump is actually flying - but yeah controls are slippery. Music I made at start and didnt check until the end - I must say I dont like it myself - will change it for sure if I make this game again.