Mine is Giana Sisters.
Space Taxi (when it doesn’t crash)
Space Taxi is such a brutally hard game - but fair, and incredibly good.
F19 stealth fighter
Gridrunner on the 64 is probably the first favourite gamer I ever had.
deleted by creator
Sword of Fargoal
Not many have heard of it probably, but: Newcomer.
It was developed by a Hungarian team, but as far as I know there is an English version. It’s an RPG in which you move around like in Doom (but you can only turn 90 degrees). Due to the limitations of the C64, you can only see your enemies as splash art before the fight (which is character based), and it involves a lot of disk swapping (it came out on a whopping FIVE floppies!). But it’s a huge game: countless characters, conversations, fights, items to run into, and you can proceed by talking to the right people, using the right items, mentioning the right topics (sometimes you can type in key words).
I’m gonna go with Boulderdash Construction Kit. Have spent so much time building caves! But there are many that are equally great: Lode Runner, Bagitman, Airborne Ranger, Bruce Lee, Defender of the Crown, Dino Eggs, Ghettoblaster, Infiltrator, Impossible Mission, H.E.R.O., Hacker…
I could go on, so many memories :DGateway to Apshai