Little Sky Scraper of Horrors file

The Bad Guys have taken over a building in a Generic American City, and they’ve kidnapped some Innocent Scientists and forced them to genetically engineer Evil Mutated Monsters as part of a fiendish plan for World Domination. But the creations have turned on their creators and escaped, and are running amok inside the building, in an orgy of Death and Destruction. It’s up to you, the Good Guys, to recapture the building, rescue the Innocent Scientists, and kill all the Bad Guys and Evil Mutated Monsters.