Alright. Fallout New Vegas is done and dusted. This is IDK...maybe the tenth time I've played through the base game and probably sixth or seventh time completing all the DLC as well. First time not on console though. This run took a bit over seventy hours with all major content completed and probably half of the side content.
https://steamcommunity.com/sharedfiles/filedetails/?id=3236525370
Stability is going to be a factor for most people playing this game, so I thought I'd talk about my experience having played this exclusively on the Steam Deck with no mods. FPS on maxed settings was consistently around 60. There were no instances of stuttering. On occasion, while in VATS, the game would freeze for a couple seconds, and during the endgame, it crashed twice during area transitions. The DLC crashed a bit more, but I detailed that in the reviews I previously wrote for each.
So all in all, performance was shockingly great. It was definitely a bug ridden mess on console, and I understand it hasn't responded well to newer PC rigs either, but New Vegas seems well suited to being played through Proton.
https://steamcommunity.com/sharedfiles/filedetails/?id=3231241948
As far as the actual game experience, it still held up perfectly well. It's a game that despite having aged significantly, still looks great, plays great, and sounds great. In many ways, this is still superior to plenty of modern era games.
Which isn't to say it is without issues. Depending on the order in which you complete quests, the dialogue might still assume you are in an earlier stage of the game, and with so many different things possible, the game does get confused by player actions at times. That's one of the more notable issues. Also, the open world traversal isn't always seamless. Sometimes for example, you can be on just the other side of a ridge from an area or objective, but you can't go over the ridge. Instead, you have to trek all the way around lol.
https://steamcommunity.com/sharedfiles/filedetails/?id=3237381639
Regardless of the above though, most of the systems in the game compliment each other and work well even today. I'd guess this game still has quite a number of years of life left in it. You might have to work to get it running, but once you do, it's a quality game that deserves to be experienced by everyone. It's a true and legendary piece of gaming history. Do yourself a favor and buy the Ultimate Edition though rather than buying the DLC separate, if you don't already own it. It's a huge step up from the base game version as far as content available.
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