Good Coop Games

[Swegly]

My friend and I are bored as hell and we cannot seem to find anything appealing on the steam store for cooperative gameplay. Any suggestions?

[Craptop]

Dungeon Defenders is a ton of fun!

Edit: it's 50% off atm. €5,99

[Senzelian]

Borderlands is pretty awesome. 
 

I had also a lot of fun playing Dead Space 3 in coop with a friend. We were mainly doing stupid stuff, but it was fun

[Nup]

mass effect three multiplayer is great fun...  

Payday two

geometry wars (?)

some rts games, if you're into that sort of stuff

Sanctum 2 is brilliant casual coop fun 

Orian: prelude is some good silly type if fun 

Minecraft? 

[Volbet]

Are you looking for local coop (on one computer) or are you you have two computers?

 

If you have two computers

• Payday 2
• Diablo II & III
• Killing Floor
• Trine 2
• Torchlight 2
• Orcs Must Die 2
• Portal 2
• Minecraft
• Borderlands (any of them)

[Diederik_Gr]

Awesomenauts is great if you're into competitive games, it even support local coop.

[Venum]

>Killing floor

>L4D2

>Portal 2

>torchlight

>payday 2

[Th3 Mans1ay3r]

-Killing Floor

-Left 4 Dead

-Borderlands

-Torchlight

-Payday

[connorpiper]

Portal 2 (Great SP and MP modes)

Gun Monkeys (Cheap, fun) 

Tabletop Simulator (With friends you will be coughing up your spleen while laughing)