Lego Universe: 2 Open Source Clones Compared
Darkflame Universe describes itself as achieving 'near-perfect' emulation of the original LEGO Universe server and ships a companion Nexus Dashboard web app for account management, but its README explicitly recommends against hosting large public servers due to untested security risks at scale. UchuServer, developed more sporadically, additionally supports Python scripting for building custom minigames, a capability not documented for Darkflame Universe.
Comparison table
Availability
- Status
- Playable
- Platforms
- Linux, Windows, OSX
- Play in browser
- No
- Mobile
- No
Project health
- Development status
- Active
- Last updated
- 4d ago
- Stars
- 756
- Contributors
- 61
- License
- AGPL-3.0
Compatibility
- Requires original assets
- YesA separate game client is required; Darkflame Universe does not distribute LEGO Universe files.
- Modding support
- —
- Multiplayer
- Online
Availability
- Status
- Playable
- Platforms
- Linux, OSX, Windows
- Play in browser
- No
- Mobile
- No
Project health
- Development status
- Sporadic
- Last updated
- 12mo ago
- Stars
- 91
- Contributors
- 20
- License
- AGPL-3.0
Compatibility
- Requires original assets
- YesRequires the original LEGO Universe client files to be configured.
- Modding support
- YesSupports Python scripting for creating minigames and other server additions.
- Multiplayer
- Online
| Title | Darkflame Universe | UchuServer |
|---|---|---|
| Status | Playable | Playable |
| Platforms | Linux, Windows, OSX | Linux, OSX, Windows |
| Play in browser | No | No |
| Mobile | No | No |
| Project health | ||
| Development status | Active | Sporadic |
| Last updated | 4d ago | 12mo ago |
| Stars | 756 | 91 |
| Contributors | 61 | 20 |
| License | AGPL-3.0 | AGPL-3.0 |
| Compatibility | ||
| Requires original assets | YesA separate game client is required; Darkflame Universe does not distribute LEGO Universe files. | YesRequires the original LEGO Universe client files to be configured. |
| Modding support | — | YesSupports Python scripting for creating minigames and other server additions. |
| Multiplayer | Online | Online |
| Preview | |
Known limitations
- platform: WSL version 1 does NOT support using sqlite as a database due to filesystem synchronization issues; WSL2 is required to avoid save data loss.
Frequently asked questions
Are the Lego Universe clones on this page open source?
Yes — every clone catalogued here is an open-source project. Availability, license, and development-status details for each one are listed in the comparison table above.
What license do these Lego Universe clones use?
Darkflame Universe and UchuServer (AGPL-3.0).
Do I need to own the original Lego Universe to play these clones?
Darkflame Universe and UchuServer require original game assets to play.
Which Lego Universe clone is the most actively maintained?
Darkflame Universe is currently under active development, based on recent commit activity. See the "Development status" row above for every clone's current status.
See the full write-up for each clone, or go back to Lego Universe.