Bonus points for any non-D&D or D&D derivative systems.
My first RPG was Palladium Fantasy way back when my grognard uncle invited me to his groups table. I still don’t really grok it, but it was pretty formative of my ideas of what an RPG could be. The lack of balance and extreme existential threats as part of ordinary encounters included.
Needless to say, I haven’t found a group for this system in a looong while, eheh.
The Dark Eye is still alive and well. The current edition is still a pretty crunchy and traditional RPG experience compared to say dnd 5e but it’s a lot more modern than the older ones.
And the world building is still one of the best out there for any TTRPG imo.