Thanks for all the response & feedback. We made it for an assignment, so the time we had was limited. Our ideas for the game are bigger then the current version, so after fixing the little bugs you all pointed out, we're going to another version with the same graphics but more elements. Especially the switching will be made more fun and necessary to avoid obstacles/enemy's. I'm really getting excited again about making html5 games after this positive response, so more will follow. If you want to follow the progress, you can follow me on twitter https://twitter.com/vandijckske ( i made it together with https://twitter.com/jessycordemans so you can give him a follow as well if you are interested )