Impossaball

Impossaball puts you in control of a ball, and sets you in a checkered 3D
environment with walls and ceilings. The ball bounces on the spot as standard,
but can be directed to move, or bounce higher to gain momentum. Your task is
to land on every cylinder in the level, so as to squash them down to ground
level. Lots of spikes protrude in the levels, which must be avoided. Magic
rings are both friend and foe – the first contact increases your remaining
time, but a further contact loses a life. Other obstacles cause the ball to
rebound, which could be good or bad depending on the situation.