Favorite childhood game

[Mizel]

What was everyones favorite game to play as a kid?

I ask because recently I remembered the game Commander Keen.... I loved that game as a kid! Anyone else ever play it? Played it all the time... that along with old school Atari games haha Just DLed C. Keen but Im afraid to play it because I dont want to ruin the fond memories of it I had as a kid :P