Thank you for using my music
Now suggestions time!
The main flaw in this game is that you lose lives so fast, it makes the game not fun to just keep restarting. Now I'm not saying make it easier or anything. Perhaps you could just double the number of lives in this game? It lacks that
Secondly, pressing Z every time you touch one of those mines or whatever they are, doesn't always work. Okay, maybe pressing Z is a good idea but you should make it so that it's instant instead of being directly on top of it to make it work. If that is too hard to input.. then perhaps just make it so that you don't have to press Z at all and only touch it? I love the boost idea, idiots who don't want for the screen to move further down would use that to smash into a wall, lovely. Don't alter the boost, it's awesome. Perhaps you could make it so that there is a sideways boost as well? It wouldn't give too much advantage in movement but, there are some juicy looking horizontal lines sometimes which I can't take out due to that Z button problem. Fix those two problems and the game will be much better. I vote 5 for you.