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awesome-privateserver

Awesome

A non-exhaustive list of free custom server backend implementations for various online games that can be self-hosted.

This list is partially inspired by awesome-selfhosted, go check them out for cool self-hosted goodies!

Contributions are always appreciated, check the Contributing section for more details!

This list is only for free software. For others, check out Extras.

Table of Contents

Contents

Different server implementations will be categorized by the games that they're used for, sorted in alphabetical order. Each individual entries are listed with a maintenance status indicator, the name of the software with a link to its Git repository, the language used to develop said software, and its license.

Maintenance Status Indicator Description
Active 🟩 Actively developed.
Maintenance-only 🟧 Bug fixes only.
Archived 🟥 Discontinued.

Caution

We do not aim to provide guidance on how to utilize any of the projects listed here. We are not in any way affiliated or associated with any of the listed projects.

General

  • 🟩 Pretendo Multiple languages/AGPL-3.0 - Open source Nintendo Network replacement server for the WiiU and 3DS

Games

Among Us (2018)

Note

Developed and published by Innersloth.

Arcaea (2017)

Note

Developed and published by Lowiro.

Arknights (2019)

Note

Developed by Hypergryph. Published by Hypergryph in China, Gryphline in Taiwan, and Yostar worldwide.

Arknights: Endfield (2026)

Note

Developed by Hypergryph. Published by Hypergryph in China, Ariel in Taiwan, Hong Kong and Macau, and Gryphline worldwide.

Azur Lane (2017)

Note

Developed by Manjuu. Published by Bilibili in China, XD Global in Korea, PWB Play in Taiwan, Hong Kong and Macau, and Yostar worldwide.

Blue Archive (2021)

Note

Developed by Nexon Games/MX Studio. Published by Yostar in China and Japan, and Nexon worldwide.

Command & Conquer: Red Alert (1996)

Note

Developed and published by Westwood Studios (now Electronic Arts).

Counter:Side (2020)

Note

Developed and published by Studiobside. This game had reached End of Service since August 2026.

Dragalia Lost (2018)

Note

Developed by Cygames. Published by Nintendo. This game had reached End of Service since November 2022.

Escape from Tarkov (2025)

Note

Developed and published by Battlestate Games.

Goddess of Victory: Nikke (2022)

Note

Developed by Shift Up. Published by Level Infinite.

Genshin Impact (2020)

Note

Developed by miHoYo. Published by miHoYo in China and HoYoverse worldwide.

Girls' Frontline 2: Exilium (2023)

Note

Developed by MICA Team. Published by Darkwinter in China, North America, Australasia and Ireland, HaoPlay in the European Union, United Kingdom, Japan, South Korea and Taiwan, and THS Game in Vietnam.

Honkai Impact 3rd (2016)

Note

Developed by miHoYo. Published by miHoYo in China, Nijigen Games in Taiwan, Hong Kong and Macau, Funtap in Vietnam, and HoYoverse worldwide.

Honkai: Star Rail (2023)

Note

Developed by miHoYo. Published by miHoYo in China, Nijigen Games in Taiwan, Hong Kong and Macau, 3T Online in Vietnam, and HoYoverse worldwide.

Limbus Company (2023)

Note

Developed and published by Project Moon.

Love Live! School idol festival 2 MIRACLE LIVE! (2024)

Note

Developed by GREE and published by Bushiroad. This game had reached End of Service since May 2024.

  • 🟩 ew Rust/GPL-3.0

Minecraft (2009)

Note

Developed and published by Mojang Studios.

NieR Re[in]carnation (2021)

Note

Developed by Applibot. Published by Square Enix. This game had reached End of Service since April 2024.

osu! (2007)

Note

Developed by ppy and the osu! development team.

OverField (2025)

Note

Developed and published by INUTAN Limited.

  • 🟩 LoLo Go/Apache-2.0
  • 🟩 of-ps Python/AGPL-3.0

Punishing: Gray Raven (2019)

Note

Developed and published by Kuro Games.

Ragnarok Online (2002)

Note

Developed and published by Gravity.

Reverse: 1999 (2023)

Note

Developed and published by Bluepoch.

Snowbreak: Containment Zone (2023)

Note

Developed and published by Amazing Seasun Games.

Stella Sora (2025)

Note

Developed and published by Yostar.

Wuthering Waves (2024)

Note

Developed and published by Kuro Games.

Zenless Zone Zero (2024)

Note

Developed by miHoYo. Published by miHoYo in China and HoYoverse worldwide.

World Flipper (2019)

Note

Developed and published by Cygames. This game had reached End of Service since July 2024.

World of Warcraft (2004)

Note

Developed and published by Blizzard Entertainment.

Contributing

There are multiple ways you can contribute: adding new project entries, correcting mistakes, or simply just tidying things up.

The goal of this list is to eventually become a comprehensive catalog of online game revival and private server projects, with an emphasis on quality-over-quantity; therefore, please take those points into consideration.

Pricing

No projects in the list must require any form of payment in order to access and utilize (in other words, they must be free.)

Source code availability

All projects in the list must, at the very least, be distributed under a source-available license. Access to the source code must not require any further actions from the user, and the end user must be able to produce a functional version of the software from the provided source code.

Projects licensed under OSI-approved licenses are and should be preferred where possible.

Cleanroom

All projects in the list must be written using the cleanroom approach.

Essentially, with the exception of data files that the user is required to acquire by themselves, the server's logic must be entirely written from the ground up without relying on decompiled, leaked or otherwise proprietary code.

AI generated code

Usage of AI (or "agents") is controversial, but they can be useful especially when it comes to reverse engineering.

Projects that use AI in any way will be reviewed on a case-by-case basis.

Fully vibe-coded projects are likely to be rejected outright. Suppose they even work, their maintainer may not be able to maintain it themselves once access to AI is cut off. Exceptions can still be made depending on whether or not the maintainer really knows what they are doing.

Functionality

All projects should, at the very least, have some degree of functionality implemented (in other words, the player should be able to do more than say staring at the login screen or walking around.)

If one or more projects hold enough significance to warrant their addition despite not fully meeting any of the above requirements, they may be considered to be added to the Extras list instead.

When adding new entries, please refer to how existing ones are written to ensure consistency and accuracy.

If you have any questions, feel free to create an issue. And once you got something neat going on, open a pull request!

Footnotes

  1. The fork was re-licensed to GPLv3. This is legally dubious. ↩

  2. For Technical Alpha client only. ↩

  3. The project is licensed under GPL-3.0 according to the README, however the LICENSE file is not present. ↩

  4. Source code is no longer available for future versions. ↩

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A non-exhaustive list of free custom server backend implementations for various games

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