Steam

Factorio now, and I'll save my second one for Factorio Space Age when it releases.

Vermintide 2 and Tekken 8.

Both games have high skill ceilings, so I could probably spend years (and have) playing both and still finding ways to improve or optimize gameplay.

Skyrim and Witcher 3. Shoutouts to Baldurs Gate and Witcher 2, but the latter is far too short for me to want it on my "you can only play this" list, it's quirky but there's something special as hell about it for me. I've played it through about 15 times.

Some hard choices. I generally like my RTS and FPS games. I play a wide range of games from story driven like the BG series, to yearly play throughs of 93's Doom, to mil sims like arma.

I have a hard time to stick to one game for a long time, so whatever I pick would need to be moddable to bring some variety. I'm imagining maybe a stalker game where there's a wealth of mods, but the world isn't that large. Arma 3 might be nice, you got decent multi-player bots for when the world has moved on, it's very moddable and relatively easy to set up new scenarios for yourself.

I do like my sim racing as well, so asetto corsa would definitely be the main contender there.

If I'd have to pick some games off the top of my head they'd be AoE 2, HL 2, Doom 2, asetto corsa, Ms flight sim (but the servers will die at some point), Arma.

So I'm picturing myself in 40 years time, I've finished building my new rocking chair with the skills I've got from all this free time, I sit down in front of the same computer I have now. I'd say I'm launching up doom to do another play through of Sunlust. Hm or maybe I'll do a bit more work on my at that point 10 year old OpenTTD save. Just something simple that will stand the test (and already has) of time, a game I can fire up and feel just as home in now, as I did last year, and the year before that.

I only need one and is called "Space War" 🧐

Slay the Spire. I probably don't need a second.

Beam.NG would be one just because it covers nearly every driving discipline and the other would probably be Cyberpunk. It’s not even that Cyberpunk is my favorite, but it has so much content in it at this point that it would keep me busy for years.

Civ 6 and I'll sell my other slot to the highest bidder.

Team Fortress 2 with either Deathmatch Classic or Ricochet....

Nioh 2 and Satisfactory

Bloodstained: Ritual of the Night

Octopath Traveler 2

path of exile

Assetto Corsa (assuming mods are included) and Factorio (again, with mods, but to a lesser degree).

If I am honest and base it on my actual play patterns it has to be The Binding of Isaac and Slay the Spire. Or maybe Ascension (digital version of the physical deckbuilder) especially if there is ever more content for it.

Minecraft and retroarch.

Path of Exile and Rocket League

Path of Exile 1 and 2. Not much would change

So, we're just talking Steam - that means I can keep playing Fortnite either way. And my GOG library I suppose :>

From Steam I'd pick:

• Beat Saber, it's my sport
• Stellaris, so I can keep playing it with my SO

Planescape torment and HoMM III (yes I will take the bundle, thank you)

Factorio and Baldurs Gate 3...

Feels bad leaving off other amazing games though

If we get access too all future updates, Dwarf Fortress is my clear #1 choice.
If we also assume that the game will forever have an active enough userbase that lack of players won't be a detriment: Infinity Wars as my #2.

If we assume no updates, no mods and no guarantee of users: Tales of Maj'Eyal and probably some 4x or grand strategy game, it's a tossup between Civ, Gal Civ, and Endless Legend, maybe even one of the Total Wars.

Dwarf Fortress and Factorio.

Dirt Rally 2.0 (with my sim rig and VR headset).

I don't need a 2nd game.

Stellaris and Rimworld. Replace Rimworld with Minecraft if including non-Steam games.

Dota 2 and Factorio (with mods enabled)

siege and tekken 8

Would choose those 2 because it would let me kinda bypass that limit
Source Sdk 2013 Multiplayer
S&box

Skyrim and Minecraft. But we'll see what happens after the creation kit for starfield comes out, might change one of my games