
1) Atari ST game 2) Commodore 64 game 3) Game Boy game 4) Loop while zero 5) ZX Spectrum game
Found on
https://www.crosswordclues.com/clue/loopz

Loopz is a puzzle video game originally designed and programmed created by Ian Upton for the Atari ST in 1989. Ian Upton had previously worked as head game designer for Audiogenic, who acquired exclusive rights to the game, then in 1990 arranged for Mindscape to publish the computer game in North America and console versions worldwide. The Nintend...
Found on
http://en.wikipedia.org/wiki/Loopz

Loop while Zero
Found on
http://www.encyclo.co.uk/visitor-contributions.php
No exact match found.