Gaming

WoW. Plenty of content for a years worth of gaming.

7 Days to Die of course.

Runescape 🗿

You know what, as strange as this choice is, I'd probably pick Fortnite.

Battle Royale updates every 2 weeks with slight changes to gameplay. And then has a big update every 10 weeks or so. Weekly quests. Event quests. Then there's Save the World, which has daily quests, and events, and mission rewards. They have season-long events called ventures. Usually, an additional game type that happens during that season too. Then there's creative mode which has countless user-created maps and gametypes to keep me entertained.

It might be my best bet of not getting bored for an entire year with one game.

Fallout4 with mods. Cause I get to actually play the game for one week each month and the rest of the time I try to workout which mod is crashing my game. Also my save will get corrupted randomly every few months so the year will fly by in no time.

With internet access: Final Fantasy XIV.

Without internet access: Baldur’s Gate 3.

No Man's Sky.

Witcher 3

Rocket league

You are aware you've just described the daily life of 90% of us, right?

The answer is always Civ VI isn't it? Then at the end of the year it's

"OK time's up, you made it. You're free to go."

"I just need like 5 more turns I'm setting up to invade Egypt".

Path Of Exile.

With internet: FFXIV

Without internet: Rimworld

Modded Minecraft

The Witcher I think. If you tired of playing you can just chill and look at the sunset. I think it will help with dark room situation because you will at least have some illusion of nature.

Minecraft is good too, you will probably not even notice that a year have passed. But IMO you need internet, you good knowledge of minecraft.

If we have internet, SCII is a good option, because it has a lot of community created gamemodes, like Star chess, Direct Strike or Tower Defense and all of those are time eating monsters))

I'll just wander around on Witcher 3 slaying Drowners and visiting my "companions" in Novigrad.

League of Legends, it has TFT in client so I can play that as well. But the main game can easily burn me the hours to get through every day and making sure each match is relatively new.

Depends on the PC, but if it's good enough probably Apex.

Something I expect to be repetitive. It also gets like three new seasons a year so I can just grind for higher RP each time.

Eve online or warthunder. The variety in each game is key.

I’d take the opportunity to finally get through RDR2.

Slay the spire

Surprised no one said Garry’s Mod. Literally 100 games in one. + you can create whatever you want

Dota 2. It's the only game that I can play for so long and not get bored.

No mans sky

World of warcraft for sure

Civilization VI, Crusader Kings 3 or Minecraft

Probably Rimworld. I have the most hours in that. Second place is either Mount and Blade Bannerlord or 7 days to die.

I mean if you're stuck with only a gaming PC, and nothing else, you're probably going to die of hunger and thirst, so I'm just going to use it to contact the police.

Project zomboid. 2 years ago I quit my job and crawled into a cave for 4 months. I spent 2 months of that time living in zomboid. It wasn't a good thing per se, but I know that I can live in that game like a fucking second life

Heroes of Might and Magic 3 + Addon...💪

Elden Ring for me. There's enough content there to keep me going for a year. Shout out to Baldur's Gate 3 as well. I'd be ok with either one.

Honestly red dead redemption 2, theres probably enough context to keep me entertained for an entire year

Dead cells or Returnal.

Terraria

Valheim

Dota2

Some game with online so I can troll people. And talk to people.

I’d choose rdr2 or gta. So you can essentially meet new people and still communicate and do random shit in a large open world as well.

Anything small and you’ll go insane-r

Genshin Impact.

Ample time for triple dead god in binding of isaac

Final Fantasy 14.

Hear me out. It is an MMO with a very regular update schedule, so regular that you could set your calendar by it and the only thing that has ever disrupted it in the last 10 years was COVID. You are guaranteed 5 major patches per expansion and 5 minor ones. Each expansion gets a fixed raid series (12 savages, 7 extreme trials). This is in top of continuing support for about a dozen major systems like crafting events, the blue mage minigame, 2 or 3 new systems for the expansion, new main quests, etc. I know for a fact that I will have enough content to tide over the year.

This is not a hypothetical. This actually happened when I moved into my new apartment during COVID. FF14's content additions make WoW's look pathetic. The only drawback is if you don't like the anime style and that is not a problem for me.

EDIT: The reason I didn't name WoW is because 1) WoW expansions are not consistent and there is severe variance in quality. It might be great today, but I can't guarantee liking it in six months. 2) WoW patch cycles can take ages. This is fine if I can switch to playing something else, but OP specifically says I cannot play any other game or leave the dark room.

Easy. Path of Exile, and make it 10 years.

With an internet connection? World of Warcraft. With no internet connection? Skyrim.

Stardew Valley

Valheim

I’m not stuck in the the room, the room is stuck here with me.

Eve Online - only logical answer, I’ll leave an expert in economics and walk into a new job 😂

Probably Tarkov.... I might actually become a Chad if it was all I played instead of ratting around in the dark praying I get the jump on fools or make it out with my ledex undetected by Juntao and his hacks.

Armored Core VI

Donkey kong!!!