Some good games to play with friends?

PAYDAY 2, been really enjoying that with friends recently.

Sanctum 1 and 2.

Left 4 Dead, Alien Swarm.

Viscera Cleanup Detail

Killing Floor

Rust

L4D, L4D2, Killing Floor. All I can think of right now. :)

This might be helpful.

Killing Floor, L4D2 and Borderlands 2

Forced is brilliant fun

Arma 3.

Monaco, Starbound.

Borderlands 2, for 1-4 players. I play with my two friends and it's a lot of fun, especially if you like shooters and ridiculous humor. The classes nicely complement each other and make a balanced party.
And if you want an online game, then there's always Team Fortress 2. Free and very enjoyable. No zombies though (except one map).

Lfd2 Payday 2 monaco, And coop survival games

Damned is good.

God Mode, Borderlands 1/2, Payday 1/2, Assassin's Creed multiplayer modes, Dead Island 1/2

Try Dead Space 3 or Dungeon Defenders.

Dota 2.