Hi! sorry for the misses of instructions.
The OneSwitch in the title is here to let you know that you can only use one key to control the game.
The Space Bar is the only key and is use mainly to jump.
As you re in the up-stroke phase of a jump, you can break the speed by pressing the Space Bar.
When you press the Space Bar on an arrow, the Ball moves in the arrow direction and by quickly pressing the Space Bar, you can perform a Jump in this direction.
During the downward phase of a jump, you can anticipate move or other jump 1/2 second before the ball reach the floor by pressing the Space Bar and maintain.
I hope this little help will be usefull, and for infos about different game modes, check the last post on this
pageThanks, köchOn