1,237 Online Co-Op Action games your group can play together online, including Bloody Trapland, Hammerwatch, and Sanctum 2.
All games: 24
Bloody Trapland is a fast-paced multiplayer platformer where the levels are filled with dozens of dangerous traps and tricky jumps that stand in your way! Play co-op with your friends or take on the challenges on your own. With support for up to 4 players at once, local and/or online.
Explore a monster-filled castle with up to three friends in Hammerwatch’s campaign, with online, LAN, and same-screen co-op.
Sanctum 2 combines tower-defense building and first-person shooting in an online campaign for up to four players. You and your friends protect oxygen-producing Cores through waves, character loadouts, and optional survival runs.
Blending action and survival horror, Resident Evil 6 promises to be the dramatic horror experience of 2013.
Castle Crashers sends up to four knights through a comic fantasy campaign, with local and online co-op, magic, weapons, and animal companions.
Case guarded buildings, grab the valuables, and escape together in Monaco: What's Yours Is Mine, a top-down heist game for up to four players online or on one screen.
Dungeons & Dragons: Chronicles of Mystara brings reworkings of two of Capcom’s classic arcade hits - Dungeons & Dragons: Tower of Doom and Dungeons & Dragons: Shadow over Mystara – together in one definitive digital package.
Defend generators, buy upgrades between waves, and bring up to four friends into the original five-player co-op modes of ORION: Prelude.
PlanetSide 2 is an all-out planetary war, where thousands of players battle as one across enormous continents. Utilize infantry, ground and air vehicles, and teamwork to destroy your enemies in this revolutionary first-person shooter on a massive scale.
A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!
Multiplayer is designed for up to ten players, with online and LAN co-op or PvP modes; build empires together against AI rivals and choose from six factions and several match endings.
Legends Unite! The Dynamic Duo of Batman and Robin join other famous super heroes from the DC Universe including Superman, Wonder Woman and Green Lantern to save Gotham City from destruction at the hands of the notorious villains Lex Luthor and the Joker.
Defend magical rifts with a friend in a two-player action tower defense game built around traps, weapons, and fast-moving orc waves.
Join up to two friends for a 3v3 platforming MOBA, push through droid lanes, and break the rival team’s base in Awesomenauts.
Evil has returned! Demonic powers are manifesting themselves as a myriad of dark creatures, fighting over the fates of imprisoned souls caught in Purgatory.
Join friends in Realm of the Mad God Exalt for crowded online boss fights, branching dungeons, 19 classes, and permanent character loss when a hero falls.
Take on a colorful, weapon-packed FPS campaign with friends online or over LAN, then swap monster waves for versus play.
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.
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.
Take on the role of a hardened career criminal executing intense, dynamic heists in constant pursuit of the next “big score”
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.
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.
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.
Join The Mobile Trench Brigade and protect humanity from the evil Monovision menace!