Any good Co-op games out there?

SR3

is there a specific genre you wanted it on?
i'm assuming since you're posting this here you'd want to limit it to PC.

Have you tried searching before you post?

Yes, there are good co-op games. Are you looking for anything specific?

Good: Borderlands 1&2, Lara Croft and the Guardian of Light, L4D series, PAYDAY, ME3 MP, Fable 2&3, COD Spec Ops Missions. Oh and also the LEGO series, only one with Online capabilities I think is LEGO Star Wars: The Complete Saga, others are all local coop only. But still awesome games. 2nd edit = Dead Island - couldn't bare to play it without any coop buddies.

Bad: AC3 Wolfpack, BF3 Coop.

Haven't tried out yet: Hunted: The Demon's Forge, Magicka, RAGE, Sniper Elite V2, OMD2.

Magicka and Men of War series.

Beat Hazard, Killing Floor, Dead Island, Borderlands (2), Left 4 Dead (2), Shank (2).

Orcs must die 2 is great...

A Virus Named Tom
Audiosurf (in a way)
Bunch of Heroes
Dark Island (co-op is lots of fun)
Jamestown
Left 4 Dead and Left 4 Dead 2
Magicka
Shank and Shank 2 (not sure if first Shank had co-op)
Payday: The Heist
Borderlands and Borderlands 2
And there are many other ones. If you have any specific genre I might know more.

Inversion,orcs must die 2,magicka,killingfloor, left 4 dead

Orcs Must Die 2, simply awesome!

Dead Island awesome coop

100% Borderlands 1/2

Resident Evil 5, Portal 2, Left 4 Dead 1 & 2, Magicka, Borderlands. All great.

KILLING FLOOR

Gears of War

Err, what makes a good co-op game? I've played a ton of games I'd consider good co-op games, maybe you're just hard to please (or maybe I'm too easy to please)?

Better yet, what are the ones that aren't good that you've played?

Borderlands 1 & 2
Renegade Ops
Nation Red
Trine 2
Bunch of Heroes
Torchlight II
Dungeon Defenders
Magicka
Left 4 Dead 1 & 2
Killing Floor
Alien Swarm
Team Fortress 2 MvM

Left 4 Dead 2
Killing Floor
Payday
Borderlands