I don't really have a single favorite moment.
Playing the original Commander Keen for the PC was definitely a highlight from back in the day. After that, I eagerly awaited every Commander Keen game...
Playing Wolftenstein3d with a friend on the computer. We were both so bad at the game that we took turns at the very end. One of us would control the character and do the fighting while the other would repeatedly do the full health cheat code to keep the other from dying. Looking back it seems really lame, but it was so much fun for us at the time that it doesn't matter.







