It works a bit better, but if you press up your character will just fly off the screen automatically. Its also hard for ME personally, I don't know about everyone else, because the game is bigger than my screen can display at one time. Also the collision for the gas is finicky. You should make it so the guy can actually run out of fuel so that gas is a must.
Also find a really good artist, and make some soundeffects itll really add to the game.