Dungeon Defenders II: Four-Player Tower Defense Co-op
Build defenses, fight through enemy waves, and grow a hero deck together in Dungeon Defenders II’s free online co-op for up to four players.
77% positive of 22,189 reviewsPlaying now: 296Free
Building Action games to play together
238 Building Action games your group can play together online, including Dungeon Defenders II, Total Miner, and Creativerse.
All games: 24
Total Miner
Total Miner is an open world voxel sandbox game. It is primarily designed for creative RPG game builders, but also has two action/adventure style game modes where you can just jump in and play.
77% positive of 708 reviewsPlaying now: 5$2.99
Creativerse
A sandbox adventure game as big as your imagination.
77% positive of 2,650 reviewsPlaying now: 34$24.99
Starbound Co-op: Build a Shared Universe Together
Explore planets, follow a story campaign, and build homes together in a four-player online sandbox where every friend has a ship of their own.
91% positive of 120,658 reviewsPlaying now: 824$14.99
Subsistence
Subsistence is a sandbox, first person, solo or co-op, PvE open-world survival game. Struggle through changing seasons to build a base, develop technology and gear-up in the hostile environment. Defend yourself from wildlife, the elements and AI hunters (who also build bases in the world).
72% positive of 12,636 reviewsPlaying now: 461$13.99
Force of Nature
Force of Nature is a Sandbox game that combines Action, Adventure, RPG, Strategy and Management genres
73% positive of 3,911 reviewsPlaying now: 4$7.99
Crashlands
Fight and tame alien beasts, craft resources into menacing weaponry, befriend the outlandish locals, and go toe-to-chin with a world-domineering maniac.
89% positive of 5,569 reviewsPlaying now: 14$5.24
LEGO® Jurassic World
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.
91% positive of 7,899 reviewsPlaying now: 211$19.99
Planetary Annihilation: TITANS
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!
84% positive of 11,426 reviewsPlaying now: 224$29.99
Trove
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!
79% positive of 92,806 reviewsPlaying now: 485Free
Rising World
Rising World is a voxel based open-world sandbox game, featuring a procedurally generated world, playable in single and multi-player.
84% positive of 5,344 reviewsPlaying now: 100$14.99
PixelJunk Nom Nom Galaxy: Build a Soup Factory Together
Build a soup company with up to three online friends or one local partner in PixelJunk Nom Nom Galaxy. Explore alien planets, automate production, and compete with rival corporations for the market.
76% positive of 811 reviewsPlaying now: 4$9.99
Murder Miners
The #1 rated Xbox Live Indie Game. Halo-inspired. Destructible/constructible environments. Vehicles. Zombie survival. Hookshots. Infection mode: Be the zombie & eat the dead to level up your zombie abilities. Community playdates are still hosted every week, join us!
86% positive of 3,968 reviewsPlaying now: 4$2.99
The LEGO® Movie - Videogame
Join Emmet and an unlikely group of resistance fighters in their heroic quest to thwart Lord Business’ evil plans—a mission that Emmet is hopelessly and hilariously unprepared for. It’s a wild ride with a surprising mix of over 90 playable characters including Batman, Superman, Wonder Woman, the Green Ninja, Gandalf, Shakespeare,...
86% positive of 3,674 reviewsPlaying now: 80$19.99
Build a shared galaxy in StarMade
Build ships, stations, and factions with friends in StarMade’s online voxel sandbox. Create your own goals across a generated universe, with server-based co-op and PvP.
66% positive of 2,200 reviewsPlaying now: 7$14.99
Signs of Life
Signs of Life is a sci-fi survival sandbox platformer with a combination of procedurally generated and hand-crafted content. You'll explore mysterious locations, mine blocks for resources, and meet strange (and some familiar) creatures, some of which don't even want to kill you and eat your corpse.
75% positive of 716 reviewsPlaying now: 12$14.99
King Arthur’s Gold Co-op: Small Challenges, Big Team Battles
Take on short cooperative Challenges or build beside your friends in team battles, where King Arthur’s Gold makes fortress walls as fragile as your plans.
84% positive of 5,234 reviewsPlaying now: 5Free
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 12,208 reviewsPlaying now: 459$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.
96% positive of 1,248,764 reviewsPlaying now: 28,025$9.99
Thrillville®: Off the Rails™
Thrillville™: Off the Rails lives up to its name with 20 death-defying rides! Players can build incredible coasters to leap from one track to another, launch through the air like cannonballs, blast through a burning rings of fire and more!
93% positive of 818 reviewsPlaying now: 6$9.99
TerraTech
TerraTech is an open-world, sandbox adventure game, where you design and build your own creations through a mix of crafting, combat and discovery. Design vehicles from a huge library of blocks. Scavenge, craft and buy new parts to survive and become the ultimate planetary prospector.
91% positive of 20,658 reviewsPlaying now: 0$24.99
Portal Knights
The world of Elysia needs YOU! Join this cooperative, 3D sandbox action RPG to level up your character, craft epic weapons, conquer enemies in real-time, and build almost anything! Craft your adventure. Forge your hero. Become the ultimate Portal Knight!
82% positive of 16,933 reviewsPlaying now: 0$19.99
Colony Survival
Colony Survival is a unique first-person strategy game developed by a two-man team. Build your own colony in a voxel world. Command guards, farmers, miners and other colonists. Defend your colony against the horde of monsters that attacks every night!
91% positive of 8,286 reviewsPlaying now: 0$24.95
Wrecked
Choose your vehicle, install weapons and protections, and launch yourself in the biggest multiplayer challenge ever seen!
76% positive of 2,265 reviewsPlaying now: 0Free