A 'Classic' Windows (tm) Shareware-ish game that is not in fact shareware but rather one component of the 1992 software product Microsoft Entertainment Pack for Windows (tm). The game is the original product of Dima Pavlovsky and is produced by Marjacq Micro Ltd., now simply called Marjacq.

Although it is a simple game in theory, it is found by some to be quite addictive. It consists mainly of a grey 2D arena filled with (X+1) bouncing red and white balls on each level X. The object is to reduce the size of Jezzball arena to less then 25% using wallbuilders.