I ended up stumbling onto some videos about Clive Barker's Jericho, a PS3 FPS where you can switch between bodies in your squad as you go back through time to confront an ancient primal being trying to escape from it's extra dimensional prison(Basically God created a being and then locked it away because it was too..weird, or something, before creating humans). It's actually a really cool concept and the body switching mechanic is neat, since each of the squaddies has their own weapons and specialities and I love the idea that each time this primal being tries to break out of it's prison, someone has to go in, fight through each of the previous time periods where the dimensional breach occurred to seal it once again(WW2, The crusades, the Roman Empire, and Sumeria). Also each group that goes to seal the breach gets trapped upon doing so, and they're still trapped in there forever. Basically DOOM mixed with Serious Sam but with SCP overtones(Jericho might as well be an Foundation MTF). Also Steven Blum voices the player character, which is always nice.
Now the downside is that it's a PS3 game, so all the levels are BROWN and MORE BROWN, not to mention linear as fuck. And because it's a CLIVE BARKER game, every enemy is basically gross body horror with metal bits integrated into it's flesh, and all the levels are full of Blood and shit and it gets really, really old really fast. Also the intro dialogue about how mankind is THIS CLOSE to being swallowed by evil is the most "edgy" thing I've heard in awhile, so much my eyes were rolling fast enough to power a generator from the cringe. Also, my inner historian needs to point out that Sumeria doesn't really overlap with any of the Crusades, German reach in WW2(not by a fucking long shot) or the Roman empire and they appear to have confused it with Babylon at times(they're similar but not the same), like there's a lot of middle east between where Sumeria was and where any of those empires could reasonably be expected to hold any power(and they're building bases and castles and palaces on top of the ruins so it's not like it's a matter of just getting there). Also, Jericho are described as 'witches" but also "special" members of the US Army Chaplain Corps and possibly also members of the catholic church and one of their members calls herself an atheist despite routinely dealing with supernatural shit and those don't really mix in any plausible way because the writing is shit, this is basically just throwing terms together and hoping nobody fucking notices that they don't really make sense.
I didn't play it so it's not a review and honestly I'm glad I never played it because the actual gameplay looks really dumb, I just kinda wish the concept was attached to a better game.