Ah, yeah, I mostly characterize Star Wars as "thing that spawned ten squillion tie-in thingies"/by the breadth of its expanded universe. If it's just volume of official stuff, yeah, more things come close.

Well, yeah, but that's the thing, SW has a lot of games, compared to other SF "canons".
It does! IDK what's the reason, though. Some lucky confluence of gamers and Star Wars fans meant that the first game(s) were highly profitable? A game studio person was friends with a LucasArts person?