Massively Multiplayer Games
Discover 241 massively multiplayer games on Steam. Find the best games in this genre.
Massively Multiplayer Games
Explore 20 massively multiplayer games
8BitMMO
8BitMMO is a retro-style 2D massively multiplayer game! It's a giant construction sandbox -- you can build a home or a castle in a persistent streaming world. Found and manage your own city. Fight evil LawyerCats and engage in Player vs Player battle.
0Of Guards And Thieves
Of Guards and Thieves is a multiplayer stealth game in which high-powered guards face off against fast and elusive thieves in a contest of wits. Outsmarting the enemy and shooting your way through to the goal are equally valid strategies. Simple rules, emergent gameplay and high replayability.
Cubic Castles
Your blocks, your castle, your world! Build anything you can dream up and explore with other players! Cubic Castles is a mini-MMO that combines the best of block-building and 3D platform action! Create fantastic parkour challenges, explore worlds made by other players, or even make friend!
Champions Online
Grab your cape and defend Millennium City in this comic book-style action MMORPG! Design your hero and costume from thousands of costume pieces, face super-villains like Dr. Destroyer, and create your own unique nemesis.
KUBOOM
Cross-platform hurricane online 3D Shooter
Professional Fishing
Are you falling asleep with a rod? Never again! Professional Fishing will never let you fall asleep! Play an amazing fishing simulator and feel like a real angler! Create your own fishing club and compete with others!
EmergeNYC
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
Royal Quest Online
Fantasy comes alive in this vast yet cozy free-to-play MMORPG! Choose between 4 classes and 8 subclasses, explore hundreds of locations, thousands of quests, dive into varied PvE and PvP modes, enter the unique vibrant world, and trade with other players. Play, explore, fight and be victorious!
Supremacy: 1914
Take over the control of one of the mighty nations during the times of World War 1 in the biggest WW1 strategy game of all time. Conquer provinces, forge alliances and build up your economy in real-time on persistent maps. Build experimental weapons of World War 1 and become the one true superpower!
Mabinogi
Embark on amazing adventures, build lasting friendships or even find romance in this unique social game, where a welcoming community with thousands of devoted players await! Whoever you are, or whatever your heart’s desire, come express it in Mabinogi and start living your fantasy life!
Wildgate
Wildgate is a PvPvE multiplayer shooter that blends tactical ship-to-ship combat with fast-paced first-person action. Evade deadly environmental hazards, search for powerful weapons and ship upgrades, and be the first crew to escape with the Artifact... or the last crew left flying.
Touhou Big Big Battle
just a touhou rts game
The Four Kings Casino and Slots
The Four Kings Casino & Slots is a rich social online multiplayer casino gaming experience. Play all of your favorite casino games like Poker, Blackjack, Roulette, Craps, Baccarat, Slots and more! Meet friends, climb the leaderboards and win rewards to customize your avatar.
Heliborne Collection
Rotary-wing aviation and helicopter combat with a dynamic battlefield and the support of ground forces. Appreciated for MMO elements and an addictive gameplay loop. Use tactics and make strategic decisions or fly around and shoot in historically accurate maps.
Inkbound
A turn-based tactical roguelike from the creators of Monster Train. Play solo or co-op, create powerful builds, and save the Atheneum.
WWII Online
WWII Online is a massive, persistent free-to-play MMO FPS driven entirely by players. Fight as Army, Air, or Naval forces and earn Victory Points to access more units. One global server. No scripts. Real outcomes. No zones. Huge world (300,000 km²). ENLIST NOW!
Hero Zero - Multiplayer RPG
Become a hero, build your own Hide-Out and start by saving your neighbourhood. Level up your skills, collect incredibly weird superhero gadgets, and join a superhero team to save the world!
BEACHED
A free-to-play, low-poly, open-world survival shooter where you’ll battle other players, explore massive monuments, and fight to stay alive. Build and fortify your base to defend against enemy raids, gather resources, and conquer a harsh, competitive world. Survival means doing whatever it takes.
Drift Streets Japan
Racing Game about Illegal Night Street Racing. Nice Cars and Advanced Engine Tuning. Most Realistic and Best Physics. Most Quality Graphics. Drive the Large Japan Highway with traffic. Feel the Real experience, try to drift with car cockpit camera.
Chicken Invaders Universe
A deliciously addictive core of finger-blistering shooting action, surrounded by delectable morsels of galactic exploration, spacecraft customization, and community competitions.