Submit and play again don't do anything when I click them.
I'd love this if it was more of a touch typing test, but you need both hands for that, or like MrHei said do a one handed version.
Also, it seems too easy, you can just dodge all the letters with no repercussions.
Loved it! Fun music and grapics gets you a 5.
Suggestions: Use space or mouse click for thrust. Also, checkpoints might be nice, just make it a little quicker to start a new game