>Someone mentioned Star Wars though I’m not sure those would really count.

I mean, why not? There are a shit ton of Star Wars games dude.

Spyro had 13 excluding the remakes. Even more than that if you technically count the Skylanders games as part of the franchise. Though how it has that many is beyond me since only the first three games are any good...

Tom Clancy has something around 40 different games if you go by brand name alone, though they are fractured into different storylines and settings. Even if you only count related games though, Ghost Recon and Rainbow Six still have well over 12 titles.

Medal of Honor at 15.

Grand Theft Auto has 11 standalone games...so almost.

>Note: This is just a random likely very wrong observation that I made and I am willing to accept that it’s a completely wrong one.

Nah, I don't think so. Japan has just been in the gaming business a lot longer and a lot harder than the rest of the world, and the giant corporations like Nintendo didn't have too much direct competition back in the day so only natural they'd survive and prosper into the modern era with long-running franchises.

Mario has been around since 1985, Xbox has only existed since 2001.