I love this topic. Sorry it's taken me so long to get round to posting my contribution.
When I was younger, I kept a list like this of the games I really wanted to beat one day -- most of them I never did, but
Lemmings and
Oh No! More Lemmings were two I did manage to cross off
I don't remember many others, but I know that
Scarab of Ra was one more that was on there for a long time and felt awesome when I finally beat it. Now, my old Mac is up in the attic and hasn't been touched for years, so I don't play most of those games any more. Maybe one day I'll see if I can get it working again.
As for other games, my friend Jonathan and I have gone to retro-gaming conventions once or twice a year, and while part of the fun of that is trying out new games, I also love revisiting my childhood favourites and seeing if I can do any better now. As well as
Repton 2 (which I talked about just now in another topic), at these events I've beaten
Chuckie Egg* and the four Genesis Sonic games on original hardware.
*The last 8 levels loop infinitely. Beating the game means reaching and completing the last unique level, Level 40.Some games I haven't crossed off yet, but would love to get the better of one day:
Super Mario World
Donkey Kong Country (I've reached the last level)
Donkey Kong Country 2 (this is much harder, I've only reached the second world)
Sonic CD
Chrono Trigger (I've reached the final boss)
Psychopath
...there are probably more I can't remember off the top of my head