C# Multiplayer

Open-source C# projects categorized as Multiplayer

Top 23 C# Multiplayer Projects

Multiplayer
  1. com.unity.netcode.gameobjects

    Netcode for GameObjects is a high-level netcode SDK that provides networking capabilities to GameObject/MonoBehaviour workflows within Unity and sits on top of underlying transport layer.

  2. InfluxDB

    InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

    InfluxDB logo
  3. com.unity.multiplayer.samples.coop

    A small-scale cooperative game sample built on the new, Unity networking framework to teach developers about creating a similar multiplayer game.

  4. Darkest-Dungeon-Unity

    Darkest Dungeon port in Unity. Almost completely identical to the original. Platforms: PC/Android.

  5. Riptide

    Lightweight C# networking solution for multiplayer games.

  6. OpenHV

    An Open Source Pixelart Science-Fiction Real-Time-Strategy game

    Project mention: OpenRA – Classic strategy games rebuilt for the modern era | news.ycombinator.com | 2025-01-25

    I can recommend the RTS OpenHV, built on the OpenRA engine. https://www.openhv.net/

  7. NSMB-MarioVsLuigi

    Standalone Unity remake of New Super Mario Bros DS' multiplayer gamemode, "Mario vs Luigi"

  8. Multiplayer

    Zetrith's Multiplayer mod for RimWorld

  9. Sevalla

    Deploy and host your apps and databases, now with $50 credit! Sevalla is the PaaS you have been looking for! Advanced deployment pipelines, usage-based pricing, preview apps, templates, human support by developers, and much more!

    Sevalla logo
  10. LunaMultiplayer

    Multiplayer mod for Kerbal Space Program (KSP)

  11. SocketIOUnity

    A Wrapper for socket.io-client-csharp to work with Unity.

  12. HKMP

    Hollow Knight Multiplayer

  13. creature-creator

    Discontinued Create your own creatures to explore online worlds with friends and collect new parts to upgrade your stats and abilities! Complete quests, battle enemies, challenge friends to minigames, or just have fun roleplaying — the possibilities are endless when your imagination is the limit! [GET https://api.github.com/repos/daniellochner/creature-creator: 404 - Not Found // See: https://docs.github.com/rest/repos/repos#get-a-repository]

  14. Template

    A template used for quickly setting up new Godot 4 C# games. (by CSharpGodotTools)

  15. RavenM

    The RavenM Multiplayer Mod

  16. Client-Side-Prediction

    Experiments with Client-Side prediction using unity and Mirror

  17. BeatSaberServerBrowser

    Beat Saber modification that adds a Server Browser to the Online menu, making it easy to share and join custom multiplayer games.

  18. quantum-space-buddies

    Quantum Space Buddies ( QSB ) is a multiplayer mod for Outer Wilds.

  19. OpenWorld

    A Free Multiplayer Mod For Rimworld

  20. Oxide.GettingOverItMP

    A multiplayer mod for the game Getting Over It with Bennett Foddy, powered by the Oxide modding framework

  21. unity-websocket-multiplayer

    POC for a Unity game client and dedicated server with websockets!

  22. MuVR

    The Multi-User Virtual Reality and Body Presence framework is a Unity framework that provides a foundation for multiuser/player VR experiences. Its networking is provided by the Fish-Networking library. It is primarily designed around allowing users to quickly create VR applications.

  23. server

    A multi-threaded console / game server that handles logging, user commands and connections from clients. (by Raccoons-Rise-Up)

  24. UnitySimpleTCPNetwork

    Simple chat app using tcp network in unity.

  25. RealTimeStrategy_2

    Working through GameDev.TV's Unity Multiplayer Class

  26. SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

    SaaSHub logo
NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

C# Multiplayer discussion

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C# Multiplayer related posts

  • MarCUS (inte med Marcus med k denna gången)! Här e din förklaring (Mario vs Luigi online)

    1 project | /r/stamsite | 11 Dec 2023
  • Markus borde testa Mario vs Luigi online saken. No explanation needed. Det e bara väldigt underhållande lol.

    1 project | /r/stamsite | 6 Dec 2023
  • hiyaaa everyone

    1 project | /r/NintendoDS | 1 Nov 2023
  • Peace just like the good ol' days

    1 project | /r/Zoil | 27 Jul 2023
  • So How do I set up Multiplayer in my 2D game?

    1 project | /r/unity | 8 Jul 2023
  • VR Multiplayer interaction with PC / XR toolkit

    1 project | /r/vrdev | 7 Jul 2023
  • Free cool mario fangame *New Super Mario Bros Versus

    1 project | /r/Mario | 25 Jun 2023
  • A note from our sponsor - SaaSHub
    www.saashub.com | 1 Sep 2025
    SaaSHub helps you find the best software and product alternatives Learn more →

Index

What are some of the best open-source Multiplayer projects in C#? This list will help you:

# Project Stars
1 com.unity.netcode.gameobjects 2,246
2 com.unity.multiplayer.samples.coop 1,797
3 Darkest-Dungeon-Unity 1,217
4 Riptide 1,214
5 OpenHV 946
6 NSMB-MarioVsLuigi 931
7 Multiplayer 549
8 LunaMultiplayer 479
9 SocketIOUnity 478
10 HKMP 339
11 creature-creator 266
12 Template 123
13 RavenM 124
14 Client-Side-Prediction 107
15 BeatSaberServerBrowser 105
16 quantum-space-buddies 104
17 OpenWorld 97
18 Oxide.GettingOverItMP 44
19 unity-websocket-multiplayer 29
20 MuVR 17
21 server 12
22 UnitySimpleTCPNetwork 1
23 RealTimeStrategy_2 1

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