Serious Sam II turns the campaign into a co-op stampede
Take on a colorful, weapon-packed FPS campaign with friends online or over LAN, then swap monster waves for versus play.
89% positive of 12,075 reviewsPlaying now: 109$9.99
Online Co-Op games to play together
1,871 Online Co-Op games your group can play together online, including Serious Sam II, Dungeon Defenders, and Terraria.
All games: 24
Dungeon Defenders Turns a Friend Group Into a Defense Crew
Build defenses with up to three friends, then fight beside them as monsters swarm the crystal. Dungeon Defenders mixes tower strategy, action combat, and a long trail of character and gear upgrades.
92% positive of 12,210 reviewsPlaying now: 417$14.99
Terraria Makes Every World a Shared Adventure
Mine, build, and take on a changing world with your friends in Terraria. A desktop server starts with 16 online player slots; explore for better gear, then bring it into boss fights and invasions together.
97% positive of 1,248,943 reviewsPlaying now: 21,387$9.99
PAYDAY™ The Heist
Take on the role of a hardened career criminal executing intense, dynamic heists in constant pursuit of the next “big score”
91% positive of 21,933 reviewsPlaying now: 73$9.99
Serious Sam 3: BFE turns co-op into an alien stampede
Blast through Serious Sam 3: BFE’s campaign with up to 16 online players or four people in local split-screen, against waves of monsters in Egypt.
86% positive of 21,907 reviewsPlaying now: 92$29.99
DC Universe™ Online
DC Universe Online is a Free-to-Play, massive multiplayer online action game set in the popular DC Universe. Become one of a new breed of Heroes or Villains and wield incredible powers as you go to war with legendary characters such as Batman, Superman, Lex Luthor and The Joker.
79% positive of 22,118 reviewsPlaying now: 1,125Free
Sacred Citadel
Sharpen your axe, string your bow, brew your potions! Ancaria needs heroes like you. Grab your friends to join the resistance!The once peaceful land of Ancaria is in grave danger. The evil Ashen empire has enslaved its population and is using the orc-like Grimmoc to wipe out the Seraphim, who swore to protect it.
72% positive of 619 reviewsPlaying now: 1$9.99
Worms Ultimate Mayhem
Load your weapons and experience a whole new dimension in destructive turn-based cartoon action!
88% positive of 4,334 reviewsPlaying now: 60$2.99
Iron Brigade
Join The Mobile Trench Brigade and protect humanity from the evil Monovision menace!
86% positive of 917 reviewsPlaying now: 1$14.99
LEGO® Star Wars™ III - The Clone Wars™
LEGO Star Wars III: The Clone Wars will allow fans to explore endlessly and laugh their way through the Star Wars galaxy in the most humorous, accessible and action-packed LEGO game to date.
93% positive of 7,244 reviewsPlaying now: 95$19.99
E.Y.E: Divine Cybermancy brings strange co-op missions
Take on a cryptic cyberpunk campaign with up to three friends, mixing firefights, hacking, psychic powers, and character builds.
83% positive of 6,312 reviewsPlaying now: 18$9.99
Magicka
Magicka is a satirical action-adventure game set in a rich fantasy world based on Norse mythology. The player assumes the role of a wizard from a sacred order tasked with stopping an evil sorcerer who has thrown the world into turmoil, his foul creations besieging the forces of good.
83% positive of 19,412 reviewsPlaying now: 33$9.99
RIFT
Dive into a world of epic adventure! Create your perfect hero thanks to a uniquely customizable class system. Collect, craft, and customize your gear. Go it alone or group up to challenge dungeons, raids, dynamic open-world content, and your fellow players.
74% positive of 11,667 reviewsPlaying now: 182Free
Renegade Ops
Blast your way through enemy lines to defeat Inferno, a madman intent on global domination. Destruction just got awesome.
85% positive of 1,020 reviewsPlaying now: 1$15
The Haunted: Hells Reach Co-op for Four Players
Team up as demon hunters, clear four escalating waves, and fight through grim arenas in The Haunted: Hells Reach.
84% positive of 545 reviewsPlaying now: 1$8.99
Lara Croft and the Guardian of Light
Take control of Lara and her new partner Totec, a Mayan tribesman, and uncover the ancient artifact known as the "Mirror of Smoke" in this all new action adventure game.
91% positive of 3,594 reviewsPlaying now: 34$1.49
Worms Reloaded
Ten years on from Worms™ Armageddon and the turn-based comic mayhem continues in Worms™ Reloaded, an all-new edition available for PC through Steam.
85% positive of 3,384 reviewsPlaying now: 77$3.99
Left 4 Dead 2: Four Survivors, One Way Out
Fight through infected hordes with up to three friends in Left 4 Dead 2, or face another team in eight-player Versus.
96% positive of 824,496 reviewsPlaying now: 26,548$9.99
LEGO® Harry Potter: Years 1-4
Build the adventure from Privet Drive to the Triwizard Tournament and experience the magic of the first four Harry Potter stories – LEGO style! Explore Hogwarts™ School of Witchcraft and Wizardry, learn spells, brew potions and relive the adventures like never before with tongue-in-cheek humor and creative customization that is unique to...
84% positive of 6,479 reviewsPlaying now: 133$19.99
LEGO® Star Wars™ - The Complete Saga
Kick Some Brick in I through VI! Play through all six Star Wars movies in one videogame! Adding new characters, new levels, new features and for the first time ever, the chance to build and battle your way through a fun Star Wars galaxy on your PC!
96% positive of 20,860 reviewsPlaying now: 222$19.99
Serious Sam HD turns Egypt into a co-op shooting gallery
Clear an arcade FPS campaign with up to 16 online players, or use Fusion 2017 for local split-screen with up to four on one display.
91% positive of 7,424 reviewsPlaying now: 57
Trine Enchanted Edition: Three Heroes, One Co-op Quest
Up to three friends can play online or on one shared screen, combining a wizard's conjured objects, a thief's grappling hook and a knight's strength across 15 fairytale levels.
95% positive of 12,866 reviewsPlaying now: 43$14.99
Zombie Panic! Source Turns Survival Into a Human Hunt
Team up as survivors, scavenge weapons, and barricade rooms while player-controlled zombies close in. Zombie Panic! Source is online PvP with cooperative play inside each team.
83% positive of 7,860 reviewsPlaying now: 45Free
Garry's Mod Co-op: An Open-Ended Physics Sandbox
Garry's Mod has no built-in co-op campaign, but its online Sandbox gives you and your friends physics tools, props, and a huge community workshop to turn an empty map into your own project.
96% positive of 1,099,433 reviewsPlaying now: 23,764$9.99