Luna is a multiplayer mod for Kerbal Space Program, with features including multithreaded code and network time protocol support.
Luna Multiplayer
github.com/LunaMultiplayer/LunaMultiplayer
Science, Math & Technology
Open-source projectOpen source
The Luna Multiplayer repository describes a mod that adds multiplayer to Kerbal Space Program.
About Luna Multiplayer
Luna Multiplayer, also called the Luna Multiplayer Mod (LMP), is an open source mod that adds multiplayer to Kerbal Space Program (KSP). The repository is hosted on GitHub and is licensed under the MIT license. It includes a client, a server, and a master server that lists active servers, and the mod displays available servers in its own interface.
The mod supports career and science modes, where funds, science, and strategies are shared between all players. It also supports groups or companies within those modes. Network features include NTP-based time sync between clients and the server, UDP messaging through the Lidgren library, and interpolation to reduce vessel jumping under poor network conditions. The project's wiki covers installation, running, building, debugging, and troubleshooting. The homepage also mentions optional donations through PayPal.
Key features
- Time sync between clients and server using the NTP protocol
- UDP-based messaging using the Lidgren library
- NAT punchthrough so servers do not need to open router ports
- Interpolation to reduce vessel jumping during poor network conditions
- Shared funds, science, and strategies in career and science modes
- Support for groups or companies within career and science modes
Best for: Kerbal Space Program players who want to play with others on multiplayer servers, and developers who want to read or contribute to the mod's source code.
Good for
- Open source under the MIT license
- Interpolation helps keep vessels from jumping during poor network conditions
- The wiki covers installation, building, debugging, and common issues
Luna Multiplayer at a glance
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Luna Multiplayer FAQ
Where can I find installation and build instructions?
The homepage directs users to the project wiki, which covers how to install, run, build, and debug LMP.
Does the mod support career mode?
Yes. The mod supports career and science modes, and funds, science, and strategies are shared between all players.
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