Gaming

Wart Under

I feel like the best options would be strategy such as CK3 as the other commenter mentioned or endless sandbox games like Minecraft and Euro/American Truck Simulator. X4 Foundations is a pretty fun space sim, and there are the Bethesda games with mods, Skyrim and Fallout 4 have some pretty cool mods and eventually Starfield too.

Spelunkyyyyyyy!!!

So maybe don't take this as a real suggestion because it doesn't make sense to be a game with lots of replayability, but I've replayed the everything shit out of FF8. I don't think it's because of the game. It's because of me. Maybe it might do the same for you?

UT99 so shoot me lol

Besides what people have mentioned, you also have simulator type games like SimCity. Though with SimCity, I got bored of the "new" SimCity they released.... in 2013. Either play something like SimCity 4000, or try Cities Skylines.

Shotgun King.

<3

I want to throw out Mario Bro 3, Tetris, Dr Mario, and Sonic Mania. Just pick up and go, no long term commitment, always fun solo but you can add a friend anytime. Simple but rewarding game play loop.

Factorio and RimWorld immediately come to mind. Even with the base unmodified game, you’ll likely get several weeks of gameplay out of Factorio. Then if you dive into modding, you’ll never put it down. Multiplayer is really nice too. And their big DLC just got announced, and is planned to drop in a few months. So now would actually be a great time to dive in, because you’ll get access to the DLC about the same time that you’ve burned through the content on the base game.

I can play Control over and over again.

My most played games outside of actually multiplayer games are arpgs. Diablo(mostly 2 and 3), path of exile, last epoch. Diablo2 and last epoch can be played offline, PoE can't. And yes, they're technically online multiplayer games but most people play them alone so they might as well be single player games to me. After that my most played games are RPGs and rogue likes. Plenty of good suggestions for that already

Dyson Sphere Program is dangerously replayable to me. Hundreds and hundreds of hours sunk into it

Slay the Spire

Kenshi is infinitely replayable, imo.

From the alternate starts, to the different ways you can even play the game (wanna be a lone trader, traveling from town to town buying and selling goods? Want to be the ultimate warrior who can go toe-to-toe with the Spider King? Wanna build a city/outpost where you can be totally sufficient and build up your own personal army to take over the world?), to the sheer size of the world. Plus all the awesome mods that can add so much to the game that already has a lot. You start off with your skills at 0 or in the low tens, and you will get your ass handed to you on an iron platter until you actually train up a bit; but even a high or max level character can still get fucked up by the wrong group of enemies.

I have mods that add a couple new factions (the fungoids are OP), flesh other factions out a bit more with more weapons and gear, and other building mods and some QoL mods so I can truly tailor my experience how I like it.

It plays kinda like an RTS with a mix of RPG elements.

Hades.

Stellaris, Rimworld, the Sims, and a lot of stragedy games.

Slay the Spire, with mods

Planescape: Torment is extremely replayable. I've been playing it every few years since I got a copy in I think like the early 2000s. It may be that this has something to do with having gotten to play it a little bit in the 90s but not having gotten to play the whole thing. There was a lot of anticipation there.

But I don't think it's just that. It's incredibly responsive to choice, and it's one of the first games I can recall with things like faction reputations and alignments. There's a lot there to dig through, and even once you have, it's always cool to wander around Sigil. It feels very alive.

The other one I end up replaying over and over is Shadowrun for SNES. That's not so much infinitely repayable though as just a really great game that I'm happy to run through.

Anything with procedurally generated levels, like roguelikes/roguelites. I can personally vouch for the longevity of Slay the Spire, for one specific example.

Honesty I'm shocked nobody has mentioned Tales of Maj'Eyal or ToME for short. Extremely deep roguelike with story and it is getting expansions ans updates all the time.

Also it is open-source, so can be downloaded for free, but I would recommend you also buy it in steam for instance to support it.

For me, that would be the 3D Mario games (or any Mario game, really).

I have over 70 hours logged into Super Mario 3D-Stars, and that’s just the newer way I’ve played these games.

I have enjoyed caves of qud. Feels like every run is brand new.

If you're into boomer shooters, you can't go past the original doom for infinite playability. Literally 30 years worth of user created content and mods.

Minecraft, Hoplite, Shattered Pixel Dungeon. You probably want a good roguelike.