PlatformGame

You are the marble ball and your aim is to get into the brass tube. To do so, stand above the tube and press "down".
You can also jump. To do so, press "up" or "space".
The green box is your enemy. If it touches you, the level will restart. You can kill the green box, too. To do so, jump over it.
You can also improve your abilities by getting closer the the special objects you see, and press "x".
And remember that it is possible to get into the tube just in the marble form. To change your from to a marble form, press "c".

Good Luck.