Merv the Merciless, which came on issue one of Zero magazine. What a great game, with a clever little twist. (oh, and the Neighbours theme... but I wasn't letting that spoil my enjoyment of the game.)

By the way, on a slight side note. I located this site which may or may not have been covered in here before. It is called Amiga Magazine Rack, and it covers all the major (and some not-so-major) Amiga magazines published.