Many players use 3DXChat as a studio for digital photography and video creation (Machinima). Being in a fully offline environment ensures that random players cannot interrupt a scene, providing a controlled "green room" environment for setting up shots and poses.

3DXChat is fundamentally an online social MMO, which makes creating a true "offline" version technically difficult. Most discussions regarding offline capabilities center on the World Editor Build modes World Editor Limitations : The official 3DXChat World Editor

Users can build and decorate private spaces without the latency or downtime associated with the live game servers. Privacy & Accessibility:

If you're looking for more technical details or troubleshooting help for this specific build, checking community hubs like the 3DXForum Dev Blog for engine updates is always a good move. 3DXChat 3.0 Beta - Development Update 2 - Page 5 - Dev Blog