Author's note:

ORIGINAL GAME
Balls (C) 1992 Electralyte Software Ltd, for the Atari ST.

Instructions:

Place deflectors to guide the ball to collect the pickups and exit the level before time runs out. Changing an existing deflector incurs a 2 second time penalty.

Controls:

Mouse to place deflectors, configurable in the options screen.
ESC to quit.
F4 to toggle fullscreen mode.
F12 to take a screenshot (scrn0.bmp, scrn1.bmp... in game dir)