I wanted to recommend go, but you said single player… there’s always Katago to play against.

I guarantee you’ll never truly ‘beat’ the game!

Oblivion Remastered is really good.

A Plague Tale: Requiem

Thank me later

Factorio. Aka cracktorio.

Dark Souls, no sense of management besides managing to not die, but it’s single player (with optional online interactions) and is good. Hard but satisfying when you get it. Lots to explore in the world.

Try Shroom and Gloom! It’s a roguelike deck builder on itch.io, completely free if you want it to be. Very challenging and really fun

ITT all games dancing around Bannerlord but no one recommended it yet.

I just restarted playing fallout 4. Can give that a shot if you can catch it on sale

Grim Dawn was pretty sick too if you like Diablo style games. I was pretty impressed

Factorio. If you enjoyed Satisfactory you should check out the game that created the genre. They have an excellent demo and although it’s relatively expensive compared to similar games, it’s the best one and runs like an absolute dream even when things get huge where a lot of similar games slow down.

It seems like you like games with a lot of replayability, as well as games that make you think a bit. I’m a bit of the opposite (I like shorter, unique experiences), but I also like games that make me think. So here are a few that I’ve enjoyed that I think fit the bill:

• deck-building roguelikes, like Slay the Spire, Balatro, etc; you can get a lot of hours in it, they generally don’t have DLC, and they’re more on the “thinking” vs “combat” end of the roguelike spectrum
• Planet Coaster or Parkitect - theme park themed “city builder”; Planet Coaster is a bit of a DLC-fest, but Parkitect only has 2 (and a soundtrack); look around the various “tycoon” games if you like the genre, they can have good replayability
• “coding” games - Human Resource Machine, Opus Magnum, etc; these have poor replayability (mostly just optimizing solutions), but there’s a lot of thinking and you can get a lot of hours out of it if you don’t look up guides; they’re not for everyone, but if they are, they’re very satisfying
• Dwarf Fortress - the management game, and perhaps the best in the world at replayability; the Steam version is a huge upgrade, but you can also get the classic version for free, though do be aware that the learning curve is a lot higher than the Steam version
• Sid Meier’s Pirates - old game, but I get a lot of hours in it and find it absolutely fantastic; this is more combat than thinking, but it’s more thinking than something like Mount and Blade (combat is relatively slow)
• Tropico series - they do have DLC, but you can frequently find a bundle on Humble Bundle or Fanatical or something with all the DLC included for the older games; not as sandbox-y as Cities Skylines, but still largely in that vein

That said, I want to echo what others have said and to recommend branching out. There are tons of great indie games that aren’t a total ripoff in a variety of genres, so look around for bundles or something to find something new to try.

Everyone’s recommending games but addressing steam recs, there’s Backloggd which is Letterbox for games. Sure there’ll probably be a similar overlap of games folks love that are not your jam but it’ll help you figure out what you like, find something new, and follow folks with similar tastes.

X4 foundations is a sandbox RPG in space where you do whatever you want.

• Different factions with their story, political agenda, sub-factions, technologies
• Walk out of your ship on station, all 1:1 size real time, no loading screen.
• Play first person in your ship (pew pew) in the ship of your liking
• Recruit staff members to build your empire / fleet
• Play as a manager (see RTS kind of) from the galactic map, command your empire, fleet of death, traders, miners.
• Build your own stations with their own production pipeline that Maximize the local resources
• Enjoy 25 years of lore building

I am a big fan, as you can see :D

If you like rpgs and management I’d suggest Battle Brothers, a mercenary company management game. You basically travel the countryside fighting brigands and taking jobs from various cities all while building up your company with new recruits and equipment. It’s got a bit of a learning curve but once you get the basics down it’s oddly enthralling.

https://store.steampowered.com/app/365360/Battle_Brothers/

I got no clue if this would count as something you’d be into, but I’ve been having fun with Skyblock Zero on Luanti.

Idon’t know how quickly you could finish it considering I play purposefully inefficiently, but it’s a space themed with a quest line to follow where the only limited resource is your time. Spawn on a voxel, keep clicking to gain resources, and build out from there. So far one of my only gripes is storage in the game is only drawers instead of chests, so I constantly have machines and my inventory filled.

Balatro.
You think it’s simple until it’s suddenly 1 am and your brain is mush trying to remember what strategy you’re currently using -oops lost, ok one more run…

Soma.
If you’re in the mood to be hooked on a story. Scary stuff happens, and youll question life a few times.

Pathfinder.
Wrath of the Righteous is the only tabletop pc rpg you’ll need agian. Baldergate 3 is the tutorial mission for this monster game.

Rain World.
If you enjoy metroidvanias with new mechanics.

Tunic.
If you enjoy zelda and dark souls. Theres more to it than it looks. I couldn’t put this one down either.