Space Station 13: 5 Open Source Clones Compared
Space Station 14 describes itself as the primary, actively developed successor, running on its own homegrown engine (RobustToolbox, written in C#) rather than any off-the-shelf engine, with a content-pack system its own data describes as extensible enough for community servers to modify every aspect of the game. Unitystation, built on Unity, describes itself as an original game inspired by Space Station 13 rather than a strict reimplementation of it, and is also actively developed with online multiplayer. Griefly, Space Station 3D, and ss13remake are all either halted or still pre-alpha with no confirmed playable build — Griefly and ss13remake are explicitly unplayable, and ss13remake's original sprites were withheld and replaced with placeholders.
Comparison table

Availability
- Status
- Playable
- Platforms
- Windows, Linux, OSX
- Play in browser
- No
- Mobile
- No
Project health
- Development status
- Active
- Last updated
- today
- Stars
- 3,798
- Contributors
- 1603
- License
- MIT
- Engine
- —
Compatibility
- Requires original assets
- NoOpen-source game with its own assets; no original game data required.
- Modding support
- YesExtremely extensible; community servers can modify every aspect of the game and create custom content packs.
- Multiplayer
- Online, Co-op

Availability
- Status
- Playable
- Platforms
- Windows, Linux, OSX
- Play in browser
- No
- Mobile
- No
Project health
- Development status
- Active
- Last updated
- today
- Stars
- 733
- Contributors
- 263
- License
- AGPL-3.0
- Engine
- Unity
Compatibility
- Requires original assets
- NoThis is an original game based on the cult classic Space Station 13 with no requirement for original assets.
- Modding support
- —
- Multiplayer
- Online

Availability
- Status
- Unplayable
- Platforms
- Windows
- Play in browser
- No
- Mobile
- No
Project health
- Development status
- Active
- Last updated
- 1mo ago
- Stars
- 291
- Contributors
- 57
- License
- —
- Engine
- Unity
Compatibility
- Requires original assets
- NoProject is an independent 3D resurrection with its own assets.
- Modding support
- —
- Multiplayer
- —
Availability
- Status
- Unplayable
- Platforms
- Windows
- Play in browser
- No
- Mobile
- No
Project health
- Development status
- Halted
- Last updated
- 12y ago
- Stars
- 139
- Contributors
- 14
- License
- —
- Engine
- —
Compatibility
- Requires original assets
- —
- Modding support
- —
- Multiplayer
- —
Availability
- Status
- Unplayable
- Platforms
- Windows, Linux, OSX
- Play in browser
- No
- Mobile
- No
Project health
- Development status
- Halted
- Last updated
- 7y ago
- Stars
- 126
- Contributors
- 18
- License
- MIT
- Engine
- —
Compatibility
- Requires original assets
- —
- Modding support
- —
- Multiplayer
- Online, Local multiplayer
| Title | Space Station 14 | Unitystation | Space Station 3D | ss13remake | Griefly |
|---|---|---|---|---|---|
| Status | Playable | Playable | Unplayable | Unplayable | Unplayable |
| Platforms | Windows, Linux, OSX | Windows, Linux, OSX | Windows | Windows | Windows, Linux, OSX |
| Play in browser | No | No | No | No | No |
| Mobile | No | No | No | No | No |
| Project health | |||||
| Development status | Active | Active | Active | Halted | Halted |
| Last updated | today | today | 1mo ago | 12y ago | 7y ago |
| Stars | 3,798 | 733 | 291 | 139 | 126 |
| Contributors | 1603 | 263 | 57 | 14 | 18 |
| License | MIT | AGPL-3.0 | — | — | MIT |
| Engine | — | Unity | Unity | — | — |
| Compatibility | |||||
| Requires original assets | NoOpen-source game with its own assets; no original game data required. | NoThis is an original game based on the cult classic Space Station 13 with no requirement for original assets. | NoProject is an independent 3D resurrection with its own assets. | — | — |
| Modding support | YesExtremely extensible; community servers can modify every aspect of the game and create custom content packs. | — | — | — | — |
| Multiplayer | Online, Co-op | Online | — | — | Online, Local multiplayer |
| Preview | ![]() | ![]() | ![]() |
Known limitations
- development: Project is in pre-alpha phase with minimal content and systems.
- assets: This is a defunct project with placeholder images replacing original sprites, which have been withheld for use in a future project.
Frequently asked questions
Are the Space Station 13 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 Space Station 13 clones use?
Space Station 14 and Griefly (MIT); Unitystation (AGPL-3.0).
Do I need to own the original Space Station 13 to play these clones?
Space Station 14, Unitystation, and Space Station 3D run standalone, no original files needed.
Which Space Station 13 clone is the most actively maintained?
Space Station 14, Unitystation, and Space Station 3D are 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 Space Station 13.