3,446 Action games your group can play together online, including Sine Mora EX, Barony, and Tumblestone.
All games: 24
Sine Mora EX is a side-scrolling shoot'em up that provides a unique challenge, where time is the ultimate factor. Mixing classic shooter sensibilities with contemporary presentation, Sine Mora EX is a gorgeous shoot'em up offering both a Story Mode that weaves an excessive tale and an Arcade Mode.
Barony is the premier first-person roguelike with cooperative play! Adventure alone, or gather a party with iconic and unusual RPG classes to face off against the brutal dungeons. Test your resourcefulness, wits, and friendships, on your quest to lift the evil lich's curse!
Tumblestone is the first original action-puzzle game of the past fifteen years -- completely reinventing the genre into a deep and cerebral puzzle solving experience that you won't forget.
Battle huge "Koju" bugs in CAVE's beautiful fantasy shooter, Mushihimesama. Experience the thrill of bullet hell from the masters of the genre as you evade visually stunning shot patterns with thousands of bullets.
A masterful combination of top-down shooter and endless replayability with procedural levels. Blast your way through walls & enemies with guns and cybernetic abilities. Install perks from cyber chambers and upgrade your character stats after each death. Can you stop the Overseer?
Enter the futuristic year of 1984, an age where ducks run wild in a frantic battle for glory. Blast your friends with Shotguns, Net Guns, Mind Control Rays, Saxophones, Magnet Guns, and much, much more. This is DUCK GAME. Don't blink.
One fish, four lemurs. Online arcade battles between lemurs on dinghies. Grab your paddles, hop in a boat, and beat up anyone who tries to snatch your precious fish. And don’t miss the chance to fishslap a friend or three!
Join Cubert on his journey to reach his true love in Box Maze, a platforming adventure filled with challenging levels, dangerous enemies, hidden secrets, and powerful bosses.
It's 3:00 a.m. Your neighbours are having a loud party. Stop them. Party Hard is tinyBuild's award-winning stealth strategy game about ruining parties by any means.
Explore a neon galaxy in your very own battleship in this 1- to 4-player couch co-op adventure.
First-person action survival game set in a post-apocalyptic open world overrun by flesh-hungry zombies. Roam a city devastated by a mysterious virus epidemic. Scavenge for supplies, craft weapons, and face hordes of the infected.
LoveBeat is a free-to-play rhythm game. A lot of amazing indie songs will give you both the excitement of playing the game and the delight of listening to your favorite songs at the same time. Let’s join LoveBeat dance party where it’s full of friendly people all over the world!
Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!
Following the epic storylines of Jurassic Park, The Lost World: Jurassic Park and Jurassic Park III, as well as the highly anticipated Jurassic World, LEGO Jurassic World™ is the first videogame where players will be able to relive and experience all four Jurassic films.
Become a Timberman, chop wood and avoid the branches. Almost 30 million players could not be wrong - featured as one of the best casual games.
Ultimate battle action, and the epitome of the GUILTY GEAR XX series now on Steam! Bonus soundtracks included!
Up to four players fight through Skaven-overrun Ubersreik in a co-op campaign shaped by distinct heroes, shared danger, and loot dice.
Experience the Next Generation of the #1 Fighting Franchise. Mortal Kombat X combines unparalleled, cinematic presentation with all new gameplay.
EmergeNYC is a simulation of New York City's Emergency Services. Drive over 30 different Emergency Vehicles with up to 32 of your friends through busy City Streets with blazing sirens and air horns. Take the role of a firefighter, medic, or police officer and ride with your friends to emergencies
"Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad?" is a fast paced shower-simulation where you shower with your 8-bit dad.It's good, clean fun!
The Binding of Isaac: Rebirth is a randomly generated action RPG shooter with heavy Rogue-like elements. Following Isaac on his journey players will find bizarre treasures that change Isaac’s form giving him super human abilities and enabling him to fight off droves of mysterious creatures, discover secrets and fight his way to safety.
Grab your friends, hone your blades, and set off for an epic procedurally generated adventure in Trove! Battle the Shadow in realms filled with dungeons and items created by your fellow players. Whether hunting treasure or building realms of your own, it’s never been this good to be square!
Rampage Knights is a cooperative beat 'em up game mixed up with randomized dungeon crawling and exploration, which you can play alone or with a friend online.