I remember reading a pre-release article about Far Cry 2 in a game magazine, where were all hyped about the many different ways a player could take out an enemy camp, e.g. go in guns blazing, or set a fire that would spread to the camp, or startle wild animals which then would stampede through the camp.

So, that's the thing, that's interesting emergent gameplay.

Compare that to Just Cause (2006) or Just Cause 2 (2010). It has neat traversal mechanics (paragliding, and in the second one the grappling hook), but it has neither the emergent gameplay of Far Cry or the carefully crafted level design of a less open game.

Or compare Far Cry to Red Faction: Guerrilla. That has cool destructible buildings, but otherwise it just falls within the triangle. In my opinion they didn't do enough with the building destruction (compare it to how destruction is used in a tactical way in the multiplayer game Rainbow Six Siege, or how its used as the basis for a puzzle game in the indie game Teardown), but the real ugliness of the game design rears its head in the driving missions. I remember being able to flick my mouse back and fourth and see vehicles appear in a space in the split second it was off screen. That wouldn't be so bad if it wasn't for the fact that these were timed missions, and a vehicle could literally spawn directly in front of you, or directly to your side off camera and plow right into you.

But beyond being really annoying and goofy looking, I have to ask if that sort of system even fit the concept they were going for. The GTA games were satire games, if the spawning system and the wild car chases were a little bit goofy that was part of the joke. And while Red Faction was not the most brutally serious game I've ever played, it was one of the most political, especially for the era that it came out. In the first Red Faction you are part of an armed labor uprising very reminiscent of the Battle of Blair Mountain (the workers are miners). In Guerilla you basically fight in a SciFi version of a middle eastern war, on the side of the middle east. So where is this goofiness coming from?

Sorry, that was a bit of a tangent, but I think game design and narrative/themes are intertwined, and IMO this is another instance of taking the open world formula and leaving elements behind while not doing anything to replace them or transform the things you took to make it work in the new context.

When you say “dumbed-down”, I understand you mean that the difficulty was too low, is that correct?

Not really, no. Certainly a lot of people complained about games getting easier and easier, but in regards to Bioshock in particular I mean that its level design and gameplay mechanics were literally more mindless for the player to interact with, conceptually simpler, and less intellectually interesting, than its predecessor System Shock 2. This doesn't really have anything to do with how mechanically difficult it is to execute an action in either game (although SS2 was more difficult, in a bad way, it was enormously more clunky than Bioshock).

Its kinda hard to explain what I mean by this without writing a giant essay on the game's designs and the philosophy of the immersive Sim design ethos. The most succinct way I could describe it would be to say that an immersive sim tries to merge an action game and an open ended puzzle game (as in a puzzle game where the player can come up with their own solution) into a seamless whole. Another way to describe is as a game that tries to maximize the potential for emergent gameplay while still having finely crafted encounter design (something that in most games is antithetical to one another). Another way to describe it would be a game that has those sorts of finely designed encounters, but with systems that are intentionally made to be exploitable in a way that many games do on accident. Or in other words the encounters are intentionally made to be cheesed and broken, and and the act of figuring out how to do this was made to be fun, and because of that the games were still usually fun even of you broke them in a way the developers didn't anticipate.

So, to put it simply Bioshock just did these things much less than its predecessor (the places where it still did was the enemy ecosystem, and to some degree the way you had to plan to take down a Big Daddy). Unless I can dig up some really old YouTube videos you'll have to take my word for it that there was a sentiment among certain circles, at least in the early 2010s, that was lamenting the death of games like System Shock 2, Thief, Arx Fatalis, and Deus Ex, and Bioshock was held up as an example of that.

At the same time there was a less niche complaint about the death of what we would call "boomer shooters" today. Specifically how they had keys, secrets, and nonlinear levels. The sentiment was that without these elements the player was much less likely to explore of their own volition (not just because its the opposite direction of a waypoint) and think about the level design. Speaking of waypoints I remember the first group of people really complaining that the arrow in Bioshock is even more egregious than waypoints, though IMO the way it encourages you to unthinkingly follow it is actually quite thematic.

Forgive me for saying that, but it’s quite harsh to call a whole decade of games uncreative if you haven’t played a lot of the greatest and most creative games of that time.

I have actually played Portal. I had a section where I mentioned that Valve games were an exception to this sentiment, then I deleted it and forgot when I wrote the last part of my previous comment.

But anyway, I'll admit that I was really thinking more about the time period from 2005 to 2015.