It's got a very basic design and feel to it but after the play button, you should make it more obvious where to click after the customise phase, there are also some white bits showing in the background that could do with fixing. For a game, it's very functional, it needs some work, graphics could be spiced up a little, as I say, it's very basic, some jumping sound effects and damage sounds would also add a nice touch to it.
For the music, I'm personally not a fan, it's a bit too loud for my headphones and kind of hurts my ears, ruining the experience. An in game mute button would do wonders for this, as I typically listen to my own stuff while playing games. Overall, it's a decent base game, it just needs touching up in a few areas, mainly graphically and sound wise, I do like that you don't instantly die when hitting spikes or falling off the edge.
2/5
<3