Track and Field.
No, it wasn't a spectacular game and at the age of 6 even after you were tired of running you'd get down on your knees and start slamming the ginormous palate mat with your hands. But why would this game, even though it's not very fun, fantastic nor entertaining when you're by your self be mentioned? Simple. This game is the reason why we had to replace our first VCR and two glasses that came tumbling down with it made it even better.
Scraggly kid hauling ass on wooden floor in one area+Flimsy entertainment stand and teetering of a obscenely large VCR = the major lulz and roffle lamow.
Operation: Wolf.
Shit, I still play this game to this day at the local arcade. Well, it's not really an arcade any more so much as it's an area to score some blow or weed while hoping the local Punch Out!! Super Mario Bro. and Area 51 machines aren't destroyed due to some asshole thinking they're witty or cool by kicking the joysticks or pouring soda down the vents. Bunch of pricks.
However as a small child when I first started playing I couldn't comprehend running out of ammo. What, you had clips?! You could run out of ammo and had to reload in the middle of an insane gun fight?! Dogs eat your FACE?! WHAT THE FUCK IS GOING ON HERE? It's a game that follows every single rail shooter up to this day. You'll still see guys tumble around on the ground and fire a few burst shots, tumble, burst, tumble burst, hide next to something that explodes, tumble, die. For some reason I've always felt the clear-all weapon in that game did superior firing awesome mega damage. Even to games that didn't have anything to do with it five feet away took damage.
Adventure Island.
You'd get tired of playing Mario so you would play Mario in a baseball hat and a grass skirt. Hell, you had a skate board and threw fire balls. What more do you want?
