3,447 Action games your group can play together online, including Sins of a Solar Empire®: Rebellion, LEGO® Batman™ 2: DC Super Heroes, and Orcs Must Die! 2.
All games: 24
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.
Can you put the world’s most determined stuntman back into the limelight? Combo, boost and pull ludicrous stunts as Joe attempts to race his way back into the record books in over 100 eye-popping levels. Leap school buses full of screaming kids and pools of ravenous sharks! Dodge spikes and mousetraps!
Join up to two friends for a 3v3 platforming MOBA, push through droid lanes, and break the rival team’s base in Awesomenauts.
Leap into a beloved platforming adventure that moves like a living cartoon. Punch, glide, and explore 60+ levels across the Glade of Dreams, solo or with up to three friends in local co-op.
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.
Choose between different factions, with their own set of expendable soldiers, mechas, and weapons. Protect your brain, mine gold, and destroy the enemy cortex in his bunker complex!
Giana Sisters: Twisted Dreams is a blistering hardcore platformer with contrasting worlds.
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.
Contains full Rising Storm content as well!
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.
Apogee Software and Interceptor Entertainment proudly present the rebirth of the cult-classic first-person shooter, “Rise of the Triad”. Bigger, better and more ludicrous than ever before.
Explore a floating island, fight through its caves, and take on Cave Story+ with one friend in local two-player co-op.
The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
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!
Join a friend for two-player Survival, where you fight through escalating enemy waves, protect supply caches, and turn each arena into a weapon.
The genre-defining military sim that began as Operation Flashpoint (2001), now a modernized, 64-bit, cross-platform build for Windows and Linux, with its engine released as open source. Over 2 million copies sold. The Cold War battlefield of Everon and Nogova, remastered for today's hardware.