I love it, but you should add way more things to the game.
-More levels (of course, you said it's just a test, I know)
-More items (Powerups, etc.)
-Levels with different gravity, maybe? Would be afunny idea.
-Different characters, with different abilities (Okay, that's not really important, but it could also be an idea for the game)
Well, keep up the good work!