Play with gravity in this skill/puzzle game
Perceptia is a platform game in which you must guide a ball to the ending flag on each of ten levels. The twist is that the gravity within the game will constantly switch, depending on your actions. Sometime you will be rolling on the floor, others across the ceiling and still other times up and down the walls. Not only is the gravity affected, but so are the controls. They are always in relation to the ball itself, not to your surroundings, so be careful: not always pushing left will make you go left on the screen. If you fall out of the sides of the screen or touch something you shouldn't, your ball will disappear and return to the starting position.
Arrows or W,A,S,D = move/jump
F7 = Switch music on/off
Esc = Return to main screen during game