The city is out of water, due to the damaged pipes. Solve 10 levels of this classic logic puzzle and you'll save the whole city.
"Congartulations" for your success, and thanks to several people, inlcuded a certain "Tubi for Amiga". Accidentally, "Tubi" means "Pipes" in Italian language :) And yes: it's time to buy an Amiga, so long Plus/4!
But wait: it's ever time for unrelated boobs, if the memory allows it!