Massively Multiplayer Games
Discover 441 massively multiplayer games on Steam. Find the best games in this genre.
Massively Multiplayer Games
Explore 20 massively multiplayer games
Nin Online
Fight and train with powerful Jutsu to rise through the ranks of your village in a ninja open-world MMORPG. Join over a hundred thousand players worldwide. Play now for free!
Tank Arena:Total Operation
Tank Arena:Total Operation is a free MMO war game where you play as a commander, drive thousands of types of tanks, armored vehicles or helicopters on a massive battlefield engaging in 12v12 team-based battles against players globally. Enjoy the fun!
SWORD OF JUSTICE
“Sword of Justice” is sparking a rebellion against outdated RPG builds! This groundbreaking Open World MMO defies tradition with stunning visuals and an immersive, lifelike atmosphere that deeply influences the game world. Step into "The Pulsing Martial World" and experience its breath-taking allure
Atlantica Global
Atlantica Global is a free-to-play (F2P) massive multiplayer online role-playing game (MMORPG), with a tactical combat system. Venture out in to the world of Atlantis where you'll find otherworldly monsters, amazing gear, and even more battle-hardened adventurers like yourself.
0RAM Pressure
Tactical story-driven online multiplayer game combining the turn-based combat of X-COM with a deep, well-grounded sci-fi setting. Experience intense tactical online multiplayer action and explore a deep plot and unique storyline built on both single-player and multiplayer missions.
0Valnir Rok Survival RPG
Valnir Rok is a multiplayer survival roleplaying game in a Viking setting with quests by bestselling author Giles Kristian. Explore a huge open world, craft items, cook meals, build houses and found clan cities. Raid other clans or place bounties. Pray to the gods and survive.
Born Again
Explore an enchanting world with friends or on a solo adventure, as you Hack-n-Slash your way through minions of the Outer Realm in redemption of your dishonorable past!
SCP: Containment Breach 2
Survive the chaos of SCP Foundation! Step into a thrilling SCP horror experience with story-driven co-op, intense PvP Breach mode, and randomized maps. Play as Class-D, scientist, SCPs, and more, each role bringing unique challenges in an unpredictable, immersive facility.
0The Cenozoic Era
The Cenozoic Era is a realistic animal survival game taking place during the rise of mammals, take control of a variety of animals and fight to survive among other players to reach the top of the food chain. Death, Destruction, Survival, Scavenge, Nature, Thrive, Conquer, Hunt. The Cenozoic Era
PropHunter
PropHunter - a fresh representative of the genre of hide and seek on the net! The players are divided into two teams - one team is hiding by taking the form and properties of objects, the second team is seek to find for impostors among props. The team that eliminates its rivals wins!
0Last Remains
"Last Remains" is a highly challenging multiplayer zombie survival game. Players must survive in a city overrun by the undead, scavenging for food, arming themselves, avoiding zombies, searching for loot, plundering other survivors, and finding any possible way to escape.
Infinite Lagrange
Different forces strive to make their own way in the space and desire the control of the Lagrange system- a gigantic transportation network. You, emerging as one of the force leaders, find yourself in a time of challenges and opportunities.
Anomaly Zone
Anomaly Zone is an open world MMORPG and a post-apocalyptic shooter. Be a scientist, a soldier, a hunter or an engineer. Explore anomalous territories, search for artifacts, fight mutants and other players. Participate in mass PvP and PvE battles. The Zone is waiting!
Prosperous Universe
In Prosperous Universe start your galactic empire by trading on the real-time market exchange with other real players. Build your 1st base from humble beginnings & watch as your business flourishes with complex supply chain strategies. Economics, politics & realism fuel this immersive business MMO.
Sim Companies
Become a Business Tycoon. Build your own company from the ground up. Do business in a virtual economy with players all around the world! Gain valuable business skills for free. An advanced, proprietary, Economy simulation model is used to deliver the best gaming experience.
War Planet Online: Global Conquest
Build your army, dominate your region and lead your alliance to conquer the globe!
Valgrave: Immortal Plains
Valgrave is a free-to-play combo focused Battle Royale game. Every game you'll decide if are a spell-slinging sorcerer or prefer to let your fists do the talking. Grab a combo and level up to show up your opponents. There are over 100,000 combinations.
Infinity Kingdom
Conquer the city, discover the Infinity! Infinity Kingdom is a cartoon-style mmo strategy game. As a resourceful lord, you must defend the land of Norheim against the evil gnomes while protecting yourself from other invading players!
Requiem: Desiderium Mortis
Requiem: Desiderium Mortis is a Free-to-Play MMORPG set in a dark distant world where an event known as the "Thanatos Incident" rendered the world almost unlivable. Create your own biological weapon known as a Temperion and experience the horrors that grip Ethergia.
0Open Mod 2025
Open Mod is an entirely free to play, niche, tactical, extreme hardcore first person shooter with immersive aspects that may not have been seen before.