LegacySO (or “Legacy Simulator Online“) is a child project of FreeSO (or “Free Simulator Online“). The latter was a reimplementation of The Sims Online™’s game engine. The original project was written in C# and Monogame and enhanced the original in many ways including hardware rendering, lighting improvements and more.

Unfortunately, when the FreeSO project was sunset in December 2024, the reimplementation was not complete and, as such, some features are missing from the final game. LegacySO’s goal is to work on preserving the work of the original development team of FreeSO whilst looking to enhance the vanilla experience where possible. In the future, the goal may shift to also work towards completing the reimplementation’s game engine to provide a fully-fleshed experience.

There are other projects, lead by other teams, who are working on similar goals. And whilst it is important to consider the de-duplication of effort in this shared mission of upholding FreeSO’s legacy, for distinct reasons we have chosen to remain independent until now. If we decide to collaborate with another project in the future, it will be announced in our Blog and on our Discord Server.

We encourage you to read more about the original FreeSO project, of which LegacySO is based on, here.

You can read information about quality of life enhancements we’re making to LegacySO here.