161 3D · Building games your group can play together online, including Citywars Tower Defense, Ancient Wars: Sparta Definitive Edition, and Technicity.
All games: 24
Citywars TD is a cute multiplayer third person Survival Tower Defense. Build towers, gather resources, craft tools, upgrade weapons, level up buildings, expand your city with your friends and work under pressure before the next incoming wave of monsters.
One of the most innovative Real-Time Strategy Games comes back totally renewed and improved to the smallest detail, with epic large scale battles, new civilizations, unit customization system never seen before in a game, 8K support, and much more.
A first-person city-building game with powerful tools that allow you to build faster and bigger. Design your own construction blocks and furniture in factories, terraform the open world, build roads and use vehicles to travel to different cities that you or your friends create in solo or coop mode.
Element TD 2 sees you combine powerful elements to create unique towers. Prove your defenses against challenging foes, and compete or cooperate with others to determine who has mastered the elements.
Welcome to Zeepkist! You race soapboxes down hills!
The unstoppable fluid enemy has returned and destroyed every world in its path! Defend against Creeper as it floods across the 3D terrain in this real time strategy game where the enemy is a fluid.
FIREWORKS MANIA is a small casual explosive simulator game where you play around with fireworks, create beautiful firework shows or just blow stuff up.
Build your car, earn sponsors, and compete in online multiplayer drift battles!
Multiplayer jigsaw puzzles with voice chat! Play on your own or with friends, and feel like you're all sitting around the same table. Millions of puzzle images, upload your own, or create any puzzle you can imagine just by describing it!
You’re the designer, engineer and architect if you can imagine it you can create it! Construct robots of any shape or size from eight-legged spider bots to eerie UFO contraptions.
Besiege is a physics building game about constructing medieval machines to annihilate armies, obliterate castles and overcome challenging obstacles. Conquer the campaign or skirmish with friends in Multiplayer!
The SpellForce 3: Versus Edition gives you the chance to enter the battlefields of Eo for free, letting you test your RTS skills against AI opponents or even other human players.
A procedural co-op space sandbox where players can build their own space ships out of dynamically scalable blocks. Fight epic space battles, explore, mine, trade, wage wars and build your own empire to save your galaxy from being torn apart by an unknown enemy.
Grab your friends and set out for adventure in this cozy, multiplayer, open world RPG! Explore, quest and craft your way through a densely packed open world. Level up 6 different classes and buy land to build and decorate your home to settle down in this medieval fantasy world.
Unique combination of turn-based 4X and historical grand strategy with a mythological twist. Explore the ancient world and build a world leading civilization. Survive, expand, conquer... and win!
Interstellar Rift is an open world starship simulator with an emphasis on ship construction and multi-player interaction. Survive in a hostile galaxy with your own custom designed and constructed starship. Invite other players to join your crew or fight them across the galaxy!
Dungeon Defenders: Awakened is co-op Tower Defense combined with epic Action RPG combat. You’re able to join forces with up to four players to take on a never-ending army of orcs, demons, and dragons! Are your defenses strong enough to save the world of Etheria?
Andromeda is a hybrid between a Space 4X and an MMO. An online universe sandbox with 2 galaxies full of planets to colonize. Build structures like Mines to generate resources to build ships and engage in fleet battles with NPCs and other players, or just sit and chat with the friendly community.
Contribute to the colonization of the universe. Get and process resources, develop your technologies. Achieve complete automation and build a portal to include another planet in the chain of worlds.
Build a new home for your team of robots as they begin a new life for themselves on a distant planet where they can fulfil their ultimate dream: to be human.
Build your own model railway tracks and scenery or explore pre-made maps, including 1000s of player-made maps and mods on the Steam Workshop! Play solo and in multiplayer, both in virtual reality and on PC!
After a devastating war between ancient mages, a powerful spell is all that holds together the shattered planet of Driftland. Take on the role of a powerful mage capable of moving and connecting floating lands, develop a mighty empire, and restore Driftland to its former glory!
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.
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.