Rollerball

RollerBall is an action/puzzle game where the player, using his mouse, must
guide a rolling ball to the goal. The ball’s energy is constantly dropping and
the player must reach the exit before it runs out completely, or else the ball
will explode, forcing a restart of the level. The levels are suspended in an
endless void of space; if the ball falls off the edge, it will immediately
reappear next to where it fell, but the player will lose a chunk of energy.
Apart from labyrinthine, narrow passages which are difficult to navigate
without stumbling into the chasm, the player must contend with obstacles such
as doors that must be opened with one-use keys, arrows that push the ball in a
specific direction, magnets and repellers that influence the ball’s movement,
mushrooms which reverse the controls, and floors which collapse soon after
being rolled on. More benevolently, there are jewels scattered around which
grant bonus score.

Rollerball