The original program was written by Andrew Von Dollen who in turn based it on a HP game by Joe W.

Adapted to Jupiter Ace by Stefano Bodrato. Title screen & instructions added by Jupiter Ace Archive Team.

The aim of the game is to collect all the clear bubbles by running over them. You control either the dark bubble or the solid box. The dark bubble is used to collect the clear bubbles, and the solid box is used as a sort of movable wall.

Both objects carry on moving until they hit something else (except for the dark bubble in the case of clear bubbles).

This game was compiled from C code to Z80 machine code with the Z88DK system. A z80 C cross compiler supplied with an assembler/linker and a set of libraries implementing the C standard library for a number of different z80 based machines.