This is pretty subjective, but okay (to be clear, such a shift isn't inherently a bad thing ,a setting will usually get more complex over time):
-Aliens/Predator (the original Alien is very self-contained, as is the original Predator - since then, it's become a sprawling mythology that, if you factor in the EU, spans at least 2000 years, not even including pre-history of the setting)
-Command and Conquer (Tiberian Dawn is set in the modern day, (for when it was produced) by the end, we have alien invasions, mutants, prophecies, the complete reshaping of Earth, etc.)
-Doom (you could make the argument that there's a gulf between Doom OS and Doom Eternal, but then, Doom was always kinda bonkers - there's nothing in Eternal that feels out of place)
-Dragon Ball (started out as Journey to the West, went to planet-scale threats, to gods fighting over the multiverse)
-Enderverse (this is more minor, but at the start, humanity's confined to the Sol system, whereas by the end, FTL travel is cracked, numerous alien species have popped up, etc. However, definitely a case where this shift works contextually)
-The Expanse (...actually, just read the above, you get the idea)
-Final Fantasy (starts as "fantasy setting of not!Europe with airships, has since gone down the route of "anything goes, just stick a chocobo in there")
-James Bond (the level of seriousness is cyclical, but take the Bronsan run - GoldenEye is grounded, DAD ends with gene therapy, space lasers, and invisible cars)
-Jurassic Park (started out on one island, ended with dinosaurs roam the Earth)
-Lord of the Rings (started off with The Hobbit, then got a continent-spanning story with LotR, then The Silmarillion deals with literal gods fighting each other)
-Metal Gear (explained early in the thread)
-Mortal Kombat (starts with an island tournament, then an extra-dimensional tournament, then that dimension invades Earth, then there's multiple dimensions, then there's the One Being, then Armageddon threatening everything, then a reboot, then time manipulation, and then another reboot)
-Pirates of the Caribbean (starts with a simple pirate story, ends with pirate lore and whatnot, then gets more sedate again)
-Resident Evil (the entire span of RE1 to RE6, before things were dialed back again)
-Shannara (starts with bog standard fantasy, ends with...well, still kinda bog standard fantasy, but it's fantasy with airships and laser guns god damn it!)
-Terminator (there's a trend that began in T2 to keep beefing up Terminators to the point where the T-1000000000 is a thing that exists, plus what started out as a last ditch attempt at time travel became, in some cases, a setting where time travel is done on a whim and a dime)
-Warcraft (started as one war in one kingdom between two races, since then...well, demons, Void Lords, other planets, oh my!)