IRL campaigns I have DMd:
Castle Dracula (Castlevania): 3 to 13
Against the Idol of the Sun: 13 to 20+2 boons
Westvault Explorations (episodic): 1 to about 6, 1/2 the party had a job change & relocated
Baldur's Gate 2: 1 to 17, level 18 coming up. May end, may go ToB, may go Watcher's Keep...