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Orcs must die 1+2, borderlands, LOTR: war in the north, titan quest, gauntlet. Too bad she doesn't like zombie games cos they are the best ones, there's so many co-cop zombie games available out there!

Borderlands!

Borderlans is alright it pairs, though it shines the most at 3-4 players

We've been playing Orcs must die 2 the last few days, I can recommend it.

With fiance we like to play together Lego games, Resident Evil 4 (one person played another watching) and Rocket League :)

Well I play HayDay with my girlfriend on my SmartPhone, there is a lot of fun in it c:

Overcooked
RECENT: Overwhelmingly Positive (288 reviews)
OVERALL: Very Positive (1,009 reviews)

Double Dragon Neon, Streets of Rage Remake, Colony, Alien Swarm, Orcs Must Die 2, Red Alert 3, the co-op missions from OpenRa, Killing Floor (their specimens, cloned human test subjects gone mad, not Zombies), Gears of War games, Dead Rising 2 and Case West ( I know it's Zombies, but it's the most fun zombie playground you can play, she should give Zombies a chance , Nation Red, Dead Space 3, Dead Island, Resident Evil 5 (again, not Zombies but majini or whatever their called), Borderlands series, Heroes of Newerth, and for now that's all I can remember, try to get her into multiplayer so more game choices open up for her, co-op can still exist in team based multiplayers and else.

There is no game in existence more suitable to play with your girlfriend than ibb & obb. It's cute, you can choose your own pace, more thinking than action, super relaxing soundscape... it is just the best. We played it with local coop, but I think it has online coop as well.

Rocket League :)

Terraria. It was fun to build a base and explore with my friends the last time i played.

Don't Starve Together or terraria ,sandbox rules \ :v /
payday2 ? :v xDD

Lego games are fun together.. =) - Lego-Harry Potter series, Lego-Lotr Series, there is a lot of them

as far as i can see nobody has suggested it yet
The cave
its a lovely coop game

Just going through my Steam library with games I played with my ex, that didn't include zombies, would be: Sanctum 2, Saints Row 3 / Saints Row 4, Dungeon of the Endless, Deathtrap, Portal 2, Gauntlet, Orcs Must Die! 2, Trine Series, Terraria, Starbound, Risk of Rain, Helldivers, Forced, Payday 2, Borderlands Series, Don't Starve Together, Monaco, Satellite Reign, and ibb & obb.

Didn't get around to trying: Dungeon Defenders, Awesomenauts, Magicka, Lost Planet 2, Phantom Breaker: Battle Grounds, GRAV, Keep Talking and Nobody Explodes, The Lord of the Rings: War in the North, Torchlight 2, The Incredible Adventures of Van Helsing, Grim Dawn and The Ship.

Wishlisted multiplayer games: Divinity: Original Sin, Necropolis, Rogue Stormers, Marooners, and Warhammer: End Times - Vermintide.

Hopefully you'll find something out of this list! <3

Hazard OPsit's a nice F2P on steam...have ton of maps, difficult level, game mode..

Portal 2