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About MMOS: MMO Simulator
MMOS: MMO Simulator is a game tagged Simulation, Sandbox and Colony Sim by SwiftSync, launching on Steam on Dec 11, 2026. That is a mild week for games like it, with 59 similar games launching the same week. The quietest week ahead for games like it starts Nov 23. The Steam games most like it include Shop Life Simulator, Food Park Manager and Cruisopolis: Cruise Line Tycoon.
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.
Launch window
Open in Launch Week CheckerBusiest weeks for games like this one in the next 12 weeks:
- Week of Oct 26, 2026 — Packed, 231 similar games
- Week of Nov 2, 2026 — Packed, 227 similar games
- Week of Nov 9, 2026 — Packed, 212 similar games
Quietest: Nov 23, Nov 30, Dec 7.
Also launching the week of Dec 7
All upcoming games
Steam data
Everything Steam lists for MMOS: MMO Simulator · record updated 2 days ago
Overview
App ID4873130
Release dateDec 11, 2026
Last change number39609332
Last record update2 days ago
App info
- App type
- Game
- Developer
- SwiftSync
- Publisher
- SwiftSync
Platforms
Windows
Features
4
Single-playerSteam AchievementsSteam CloudFamily Sharing
Data from public Steam pages, updated daily; 4 days of history. LaunchRivals is not affiliated with Valve or Steam.