Spinoff arcade games are usually drab retreads, but Donkey Kong Jr was an exception to this rule. Turning the tables and making Mario the bad guy, it's up to Donkey Kong's baby son to save his daddy from the evil plumber's clutches. Cool! "The Mists of Avalon" meet Pac Man. The game essentially involves climbing a network of vines to the top of the screen, while avoiding these strange bear-trap-pirahanna robots that Mario keeps deploying. Your only defense against your foes is to drop fruit on them (yes, a peach will destroy a solid steel robot for some reason...) and to avoid them. The game is surprisingly difficult, and the home versions of the game may have softened you up to how tough the arcade version really is (now its for money, after all :P).