We invite all Masterspace players to join the beta testing of the Steam Workshop integration. In order to get access to the Workshop beta, please join the Masterspace Beta Group as well as download the beta client:
1. Select Masterspace in the Steam client.
2. Right click and select properties.
3. Select the "Betas" tab.
4. Select "beta" from the menu.
Mod management is available from the mod manager tab in the options menu within the game.
It is also possible to browse the workshop from this link.