Inuit ninja from Greenland are well documented and continue to exist to this day. Where do you think the idea for Ninjago came from?
And I'm quite sure there must have been docens of people that needed to be ninja-killed atop of Mount Fuji.
If I'm remembering correctly and you can turn off the blood in it, I'd recommend Star Wars: Republic Commando. Battlefront II is bloodless and also quite good, unless you have low tolerance for stupid AI teammates.
Well, 2010's ending allows to explore the "advanced beings in a primitive island" thing to some extent. Maybe you could that, Greg, if only to give the diehard 2001 fans something else to complain about.