everway & character improvement

I was surprised to find that there is no XP or advancement system in Everway, especially since the game was designed with campaign play in mind.

What pre-1995 RPGs can you think of that were designed for multi-session play but that did not have any kind of XP or advancement system? The curious want to know!

ETA: Maybe instead of advancement system I should say improvement system, by which I mean, there is no mechanical way for the characters' numbers or abilities to change. The characters can acquire stuff with magical properties through play, but they cannot themselves improve.