OpenSO

The Sims Online, reborn.

Open Alpha

A modernized, community-run revival of The Sims Online — built on FreeSO. Buy a lot, build a home, meet your neighbors. Free, fair, and never pay-to-win.

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Why OpenSO

The Sims Online as a living game again — polished, welcoming, and fair.

Free & fair

Never pay-to-win

No paid items, no donations for perks, no advantages for money. Everyone plays on the same field.

Community

Welcoming & moderated

Active moderation, a friendly Discord, and regular events that give you a reason to come back.

Create-A-Sim

A better first five minutes

A rebuilt Create-A-Sim with a rotatable perspective view of your sim, proper tabs, and thumbnails you can actually see.

Under the hood

Rebuilt foundations

Current .NET and upstream MonoGame, a rewritten network layer with optional TLS encryption, and builds for Windows, macOS and Linux on every change.

Improved Performance

High refresh rate and rendering optimizations

The game engine now has a dynamic frame rate that can match your full hardware capability. Optimizations improve GPU efficiency in 3D mode.

Graphics

A modern render pipeline

A post processing stack for 3D mode with FXAA/SMAA/TAA and upscaling, motion blur and bloom. Scale the render resolution down to fit modest hardware, or up to supersample.

Launcher

Install and update in one place

A native launcher — no Electron, no browser bundled inside it. Live server status, and incremental patches that download only what changed.

Open source

Built in the open

Public code and public builds — anyone can verify what they're running. No scams, no mystery binaries.

The open alpha is live

Signups are open right now. Anyone can create an account, download the client, and play today.

The open alpha is a testing stage, not the real thing. It's where we find out what breaks with people actually playing, and everything you do in it helps us get to a beta worth launching. When the public beta arrives, the world will be wiped and reset — sims, lots, houses and simoleons all start fresh. Build, decorate and experiment freely, just don't get too attached.

Join the open alpha

Get started in minutes

Three steps and you're in the city.

  1. Create your free account on this site (or once you get into the game).
  2. Download the OpenSO launcher for your platform.
  3. Install the game in the launcher — then hit play to login and create your sim, pick a lot and start building.
Create account

Join the community

Chat, get help, find lots to visit, and hear about events first. Our Discord is the community hub for OpenSO — come say hi.

OSAB