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Removing Deathclaws and Radscorpions =/= changing the cause of the apocalypse. Bethesda did a really great job creating things like Mirelurks, Stingwings, Bloaflies, etc. My argument is that they should strive to come up with an entirely new and diverse set of creatures with every game, like they do in the Elder Scrolls franchise. The same with factions; the Institute and the Railroad have far more depth than the BoS in FO4, who seem to be there mostly as an excuse to have cool guys in power armor hanging around.
There's a reason why I didn't include New Vegas when talking about rehashed concepts, Obsidian did manage to add in a decent number of new ideas. It still wasn't totally fresh, but they did enough to differentiate themselves from series staples.
bloatflies have been around since Fallout 3, lol. they added some monsters, sure, and they kept some classic ones, like pretty much any other game in the series and that's what they should do. I don't want to discuss about Fallout 4 here or whatever ''depth'' you saw in the Institute and the Railroad but BoS has some interesting quests, which are also tied to Fallout 3
and a new ''base'', which felt more original and appealing than most of the locations in the game.
there are 4 main games (unless you count Fallout1/2 as 2 separated ones, they always felt like one single game to me), but you literally wrote "same content rehashed since 20 years ago", so please, don't make up excuses like you didn't want to include FalloutNV.
and if NV wasn't around, sure, I'd agree to some extent that this series needs (needed?) more new and fresh content.
It's a roleplaying setting. A lot of us comment on the game from that perspective. Think Forgotten Realms or Shadowrun. You can absolutely apply the general rules of the Fallout universe to other places than the U.S. hell, we already got two on the east coast which is already moving far away from the original location (though they did turn them into ridiculous wastelands on a whole different level just to retain the California desert imagery to some extent).
Besides, your perspective that Fallout is just recognizable factions and other obvious tropes is how we ended up with dumb shit like the Brotherhood of Steel being national. They shouldn't have been in that game in the first place. Leave that shit to film franchises, let RPGs keep being RPGs.
uh, I never wrote that a Fallout taking place outside of US couldn't exist at all. my point was that the series has some core elements, whether it's monsters, factions, weapons or whatever else. and as already proved, you can mix up the formula to create something that feels unique and people will still be able to recognize that game as a Fallout game because of those core elements.
not even sure what point you're trying to make with that second part of your post. your perspective of my perspective is wrong, because I didn't imply that "Fallout is just recognizable factions and other obvious tropes (?)", and I don't see what the fuck is wrong with using some factions/organizations like BoS or the Enclave in more than one game (or giving them at least some presence) if they've become a central part of the series. I'm not stating that Fallout without BoS or super mutants isn't Fallout, and trying to be innovative while adding freshness to the formula is always good (and games like F3 and especially F4 probably needed more of that), but going too far and removing a lot of those core elements would be pretty much like making a different game.