Comfy Couch Multiplayer PC games:

[MisterNoisy]

So I have a decent if not amazing gaming/HTPC (3570K, GTX970) with four XBox controllers set up in the living room and am looking for some more couch multi/co-op games (preferably 4P) for it - ideally available on Steam.  Currently, we've been playing the Jackbox games, Ultimate Chicken Horse, GangBeasts, Duck Game, Nidhogg and a couple of others.  

Anything you guys could recommend to add to the rotation?

[Kail]

Depending on the setup, there's some hot seat turn based stuff that miiiiiight work (I think Blood Bowl is playable with controllers, is it not?)

There's a bunch of 2p stuff, racing and fighting games mostly (Mortal Kombat and Street Fighter both have local multiplayer support I think) but there's also some retro Genesis stuff on there that works with two players (Streets of Rage and Columns and so on)

The stuff I drag out when people bring kids over is typically Awesomenauts (usually vs. bots), Worms, Keep Talking and Nobody Explodes (though I don't know how well that works with a controller)

[Trippy]

Gauntlet?

[ezrast]

Crawl, Forced, Magicka, Helldivers, Monaco.

[Rasix]

Dungeons & Dragons: Chronicles of Mystara, Castle Crashers

[MisterNoisy]

Castle Crashers

Oh shit, I totally forgot this was also on PC.  I'm digging some of these other suggestions too - many thanks, everyone!

[KallDrexx]

Overcooked is a game I really want to play next time I have friends over.

[Druzil]

Overcooked looks great.

Brawlhalla, Risk of Rain & Towerfall are a few more I can think of

[MisterNoisy]

Overcooked was a huge hit.  Fantastic game that had the whole room yelling and laughing.  Best part was the seven year old letting the kitchen burn down while shooting everyone with the fire extinguisher.