If you want to read the full Alternative story, issue 107 is still available from the Imagine shop, click here
A similar screenshot to this actually appeared in the article. It's of a game called BMX Ninja which was a "high concept" title by Alternative. Curiously, the game was original banned by WH Smith (or they refused to stock it) because of some risque sprites in the background. Alternative were shocked, re-submitted the game unchanged and it was accepted and subsequently stocked.
This is a screenshot from Charles Bystram's Cannibals from Outer Space. Despite its intriguing title, it was unfortunately just a bog standard isometric game.
Thanks to Rhodesvibes for some of these images.