Keep Talking and Nobody Explodes? I love that game.

Good party games:

• Ultimate Chicken Horse
• Gang Beasts
• Unspottable

More intense coop:

• Gauntlet
• Cuphead
• Spelunky

I’ve heard good things about DuneCrawl, but I’ve never played it.

If you are looking for a horror movie type experience, Until Dawn and The Quarry are great. You pass the controller when the character changes, but they’re designed to be enjoyed by a group.

My boys and I played DuckGame an entire 3day weekend once. I set up 2 TVs so we could team up in Fortnite with a PS4 and a Switch, but honestly we played DuckGame more. I spent this summer with my 16yo playing Divinity Original Sin 2 coop split screen. It was fun until Act 3. Can’t recommend it, but ymmv.

Oh, when my kids were little we put a lot of time in Amazing Frog. And Minecraft, obv.

Depends on the game type you’re looking for. Ive enjoyed playing stardew valley with my friends. You can play side by side in person if you connect an extra controller. Alternately, if they go home and also have the game installed you can play internet coop from afar as well with the same save and same profile.

Heavenly Bodies.

Magicka and Magicka 2 are magic casting games that are absolutely hilarious and will have you freezing, soaking, burning, crushing and electrocuting your team mates all as you frantically try to combat enemies.

It takes two is amazing, but AFAIK only allows for two players.

Not co-op, but Unspottable is fun. It’s a casual couch multiplayer where you and your friends pretend to be bots while trying to punch each other.

Terraria. Seriously. Do a blind play through without a wiki. Super duper fun. It can be short or hundreds of hours, depending on your style. Great for groups as well, as it requires a surprising amount of team work.

The Trine games are pretty fun with multiple players if I remember correctly

You need a copy and a PC for each person but I’ve been playing Slay the Spire 2 with my kids as a couch co-op game and it’s good

Casual Games

• Untitled Goose Game: silly, funny, and easy for anyone to pick up
• Overcooked Series: work together in a kitchen, may test your friendships haha
• Human Fall Flat: frustrating but funny platformer
• Any Lego Game: great to play with kids
• Minecraft: the most popular game for a reason
• Minecraft Dungeons: fun rpg based on Minecraft
• Terraria: 2D Minecraft but with easier crafting and more to do
• Pico Park: puzzle platformer, good for large groups

More Difficult Games

• Stardew Valley: adventure farming simulator (not very difficult but more involved than casual games)
• Portal 2: FPS puzzle game
• Cuphead: very difficult side scrolling shooter
• Borderlands series: FPS looter shooter
• Castle Crashers: side scrolling hack and slash rpg
• Left 4 Dead (1+2): FPS zombie shooter, playing with mods is hilarious

Non-Cooperative Couch Games

• Jackbox series: assorted party games, good for lots of people
• Super Bunny Man: silly fighting game with wonky physics
• Fall Guys: battle royal platformer
• Lego Party: looks like the Lego version of Mario Party though I’ve not played it

We’re currently playing Sunderfolk, it’s a great game so far, kids and grown ups (it’s got a bunch of reading and strategy, so it depends on the kid)

As someone else said, Jackbox games are plenty fun, much lighter, each party pack has 4-5 different games, and they go on sale often on steam. Look through the videos for each pack to get an idea of the games it comes with.

Overcooked 1 and 2

Goat simulator 3

For real.