Charming entry! Here's some things that'd make the game clearer for the player:
- The color of the speed boost is almost the same as the color of the enemies, it's quite confusing ^^
- This was probably made in Unity, seeing you used the default camera background color? :D Perhaps next time you could look up some color schemes online to make everything work together better (just google "color scheme"), it's not a lot of work and does so much to the overall experience
Apart from that, it's pretty straight forward, snappy controls, which I like ^^