Speaking of Doom, I remember a part of my childhood was filled with books, games, and toys. Unfortunately not much of friends, but that's besides the point. My nerdishness got the better of me. It was fun enough to a level that I remember to be fun. (Let's not recall any bad experience at this time). The best part of everything was actually this - no worries. :)
Left - Doom is arguably the gold standard of games even until today. Right - guess which game?I'm quite fond of computer games. My eye-hand coordination has improved significantly. =p
Warcraft classic. Total Annihilation - the top on my list.
DOS and VGA games then - Pharaoh's Tomb & Arctic Adventure. Games don't need to be high tech. :)
As long as they're fun. Problem-solving skills (Lost Vikings), strategy (Shining Force), Even to the most classic, CGA era, Gauntlet...
And many more. I think I'll stop here before you get bored.
Also, Tamiya ( I bought a Big Bang Ghost and modified it :D ), riding Haro Master, etcetera, the good old days.
As you grow older, you'd have more responsibilities, you'd have more worries, you'd become serious, then you'd grow even older, and so it goes. Maybe we should take a break. Just have fun. Be like kids again. :D