Browse free open source C# Multiplayer Games and projects below. Use the toggles on the left to filter open source C# Multiplayer Games by OS, license, language, programming language, and project status.

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  • InEight is a leader in construction project controls software Icon
    InEight is a leader in construction project controls software

    InEight serves contractors, owners, and engineers in capital construction

    Minimize risks, gain operational efficiency, control project costs, and make confident, informed decisions. InEight software has your back during every stage of construction, from accurate pre-planning to predictable execution and completion. When project teams collaborate effectively, every decision is backed by precise, authoritative insights.
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  • 1
    Impostor

    Impostor

    An open source reimplementation of the Among Us Server

    Impostor is an open source reimplementation of the Among Us Server, written in C#. It is among the first Among Us private servers with support for Steam, Itch, Android and iOS. It is a full replacement of the game's official server, so you can expect all of the game's features to be included, and the same fun playing experience. The difference of course is that you get to play on a private and secure server. Impostor has plugin support as well as a server-sided anticheat feature. You also have the option of playing on a server hosted by someone else.
    Downloads: 26 This Week
    Last Update:
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  • 2

    coldev

    C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT

    + C/C++ and PHP projects, Python and Others + 3D ENGINES + Videogames Projects based in Bennugd http://www.bennugd.org Web Page https://coldev.sourceforge.io/
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    Downloads: 88 This Week
    Last Update:
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  • 3
    Manic Digger is a public domain 3d block-building game similar to Minecraft.
    Downloads: 15 This Week
    Last Update:
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  • 4
    2D isometric MMORPG using the SDL framework. Daimonin offers a free public server at https://www.daimonin.org . A Unity client is also in active development.
    Downloads: 9 This Week
    Last Update:
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  • Connect with customers in one app Icon
    Connect with customers in one app

    Businesses of all sizes seeking an AI-enhanced, all-in-one communication platform to unify voice, video, and messaging for improved team collaboration

    Dialpad Connect is an AI-powered unified communications platform that combines voice, video, and messaging to enhance team collaboration and customer interactions. It features real-time call transcription, automated call summaries, and AI-generated action items to help users stay focused during conversations. The platform integrates seamlessly with popular business apps like Salesforce, Zendesk, Microsoft Teams, and Google Workspace to streamline workflows. Designed for businesses of all sizes, Dialpad Connect delivers enterprise-grade reliability with 100% uptime SLA and robust disaster recovery. Security and privacy are core priorities, meeting standards like GDPR, HIPAA, and SOC 2 compliance. Dialpad Connect helps companies elevate customer experiences while boosting team productivity.
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  • 5
    Stars! Nova
    Stars! Nova is a clone of the classic 4X space strategy game Stars!. While nowhere near the functionality of Stars! quite a few features have been implemented so far. See the Nova web page for details.
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    Downloads: 5 This Week
    Last Update:
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  • 6
    Multiverse

    Multiverse

    Open Source Virtual World and MMOG Development Platform

    3D Client (Windows), Server, and Tools to easily create massively multiplayer games and virtual worlds. If you want to contribute to the source code please go to https://github.com/multiversemmo/MultiversePlatform
    Downloads: 3 This Week
    Last Update:
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  • 7
    Dark Orbit Bot

    Dark Orbit Bot

    Bot for online game Dark Orbit

    Dark Orbit Bot is currently not being developed due to lack of time. I recommend http://www.pbdo-bot.com Great bot over there! -jD
    Downloads: 7 This Week
    Last Update:
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  • 8
    VDCraft

    VDCraft

    A Minecraft clone for 1.8.X multiplayer

    This is a Minecraft clone which can connect to 1.8-1.8.9 offline multiplayer servers. You can place and break blocks, chat, display your hand and hotbar. It supports up to 8x antialiasing and some rough lighting. Leaves look like the Minecraft "Fancy" graphic setting.
    Downloads: 2 This Week
    Last Update:
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  • 9
    EyesOnly - TopSecret

    EyesOnly - TopSecret

    The world is no longer the same

    The world is no longer the same, to keep the working class together it takes tactical action and quality intelligence for the party to unite more and more and be accepted as unanimity. Join the country's most senior field agents and fight the most entrenched reactionaries. Comrade on-wards the fight continues. License Advice: Creative Commons 1.0 Legal Advice: https://www.dmca.com/r/p20r5p8
    Downloads: 1 This Week
    Last Update:
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  • Contractor Foreman is the most affordable all-in-one construction management software for contractors and is trusted by contractors in more than 75 countries. Icon
    Contractor Foreman is the most affordable all-in-one construction management software for contractors and is trusted by contractors in more than 75 countries.

    For Residential, Commercial and Public Works Contractors

    Starting at $49/m for the WHOLE company, Contractor Foreman is the most affordable all-in-one construction management system for contractors. Our customers in 75+ countries and industry awards back it up. And it's all backed by a 100 day guarantee.
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  • 10

    EVE Industrial Assistant

    An assistant for the EVE Online Industrialist.

    EVE Industrial Assistant is a desktop application written in C# that assists with the day-to-day tasks that a Industrial player may encounter. The scope of the program includes: - A Blueprint database which the user can add select blueprints into his own 'Collection' with custom values - A Mining Yield Calculator that is available with preset options - A Order System that utilizes either Base or User blueprints to calculate the minerals needed, by extension also the amount of ore needed, and also generates a report for each other.
    Downloads: 1 This Week
    Last Update:
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  • 11
    MineCraft-Texture-Studio-2018
    MineCraft Texture Studio 2018 (1.12/1.12.1/1.12.2) is only for Minecraft 1.11.x/1.12.x Based on Minecraft Texture Studio 1.0.8 My Version is for Minecraft 1.11.x/1.12.x Visual Studio 2017 Framework 4.5 Windows : Vista/win7/win8/win10
    Downloads: 1 This Week
    Last Update:
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  • 12

    SrcdsManager

    Manager application for multiple srcds instances.

    SrcdsManager is designed to make your life easier when it comes to managing multiple instances of srcds under windows. SrcdsManager is a fully featured tool, that allows you to install, update, start, stop, and restart instances of srcds in just a few easy clicks. SrcdsManager is still actively under development, and as such you can expect new features and updates regularly. Be sure to check back to make sure you're running the latest version for all of the newest features and tools
    Downloads: 1 This Week
    Last Update:
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  • 13
    Vocaluxe
    Vocaluxe is an open source singing game inspired by SingStar™ and Ultrastar Deluxe. The code is hosted on github: https://github.com/Vocaluxe/Vocaluxe
    Downloads: 1 This Week
    Last Update:
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  • 14
    A 360 game created by 2 college kids under development. A sci-fi hack and slash.
    Downloads: 0 This Week
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  • 15
    Downloads: 0 This Week
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  • 16
    ASS is a project to implement an ELITE-style game with multiplayer capabilities, realistic and physically correct movement in space, trading, lots of ships, planets, guilds, fighting, exploring, aliens, evolving technology... Everything...
    Downloads: 0 This Week
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  • 17
    After gaining some experience in developing online games, this project is being remade in C# and XNA to ease the development process. Additionally, we now use a P2P architecture instead of Client-Server.
    Downloads: 0 This Week
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  • 18

    Advanced Traffic Simulation

    A mixture of game and simulation for public transport.

    This project is about a game and a simulation to work together. The focus lies on public transport. Manage your line network in your home area. Upgrade your vehicles, build new roads, deal with accidents or plan replacement busses for railroad construction works. But it's also possible to drive the vehicle yourself or just walk around the world and enjoy your line network. By vehicle we mean: train, tram, subway, bus and monorail. By using an addon structure it is possible to customize the whole world or even include non-existing means of transport like the hyperloop. Plan, manage and drive all together in multiplayer. Either competing or cooperative. Discord: https://discord.gg/P3SbVuD VSTS: https://advtrafficsim.visualstudio.com/
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    The Ares Project is a real time strategy game project focused on competition (esport). It has to have a fast, nervous gameplay, and to be well balanced.
    Downloads: 0 This Week
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  • 20
    Asteroid Outpost
    Asteroid Outpost is a 2D tower strategy game written in C# using the XNA framework. I am starting with a vertical slice of the gameplay, so for now, you can only mine minerals from the asteroids, build solar power stations, upgrade your structures, and defend yourself from never-ending waves of enemy ships. Development moved to: https://bitbucket.org/jcpmcdonald/asteroid-outpost/
    Downloads: 0 This Week
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  • 21
    LVClient or Auto Linh Vuong is a tool for Linh Vuong game of VTC Provider. It seem as 1st auto tool for webgame at this time. With more options and more selection. But have some problem with game provider so we can't make tool better than.
    Downloads: 0 This Week
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  • 22
    An Open-Source 3D RTS (Real-Time Strategy) video game for Windows PCs that uses the Microsoft XNA game libraries.
    Downloads: 0 This Week
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  • 23
    Bomb-A-Chicken
    This is a Bomberman remake we programmed and designed during the zdi C# workshop of the Lippe-Berufskolleg (Lippstadt, Germany). Kill your opponents by eggsploding them! Trailer and gameplay: http://www.youtube.com/watch?v=JvFh0WPc5F8
    Downloads: 0 This Week
    Last Update:
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  • 24
    Bonus Gold Calculator 4 LoL

    Bonus Gold Calculator 4 LoL

    Bonus gold calculator for league of legends

    Bonus gold calculator for league of legends Now you can properly plan when to buy gold items, how many money you will make from them, and how much you lose with a bad support :) Current Version: 2.4.0.2
    Downloads: 0 This Week
    Last Update:
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  • 25
    BFI is a 3rd person multiplayer realtime starship space combat game. Fleets fight for resources, and captains for promotion, in the style of Netrek and Navy Field.
    Downloads: 0 This Week
    Last Update:
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