
27%releases in 41 days
AT A GLANCE
DEVELOPERSwiftSync
RELEASEDEC 11, 2026
PLATFORMSteam
TAGSsimulationsandboxcolony simrelaxingeconomygame developmentmanagementfantasybase building2 5d
Build and run your own fantasy MMO in a single-player management sim. Design the world, classes, loot and raids, then watch simulated adventurers play, form guilds and chase rare drops. Keep them happy, keep them subscribed, and decide what your MMO needs next.
Build the MMORPG you've always wanted to play. MMOS is a single-player management game where you build a fantasy MMO and run it for a population of simulated adventurers. Create the world they explore, the classes they play and the loot they chase. Their subscriptions fund your game, so give newcomers a good start and veterans a reason to stay.
Build islands, lay roads and create towns. Fill your zones with monsters, quests, gathering spots and places to rest. Decide where adventurers begin, what challenges they find along the way and which rewards wait in the dangerous corners of your world.
Lay out rooms, place enemies, give bosses their abilities and choose the loot. Send a test party through before opening the doors, then watch adventurers gather through the group finder and tackle your creation. Follow the fight, inspect the results and adjust the challenge.