Open Source Games Software
Found 18 self-hosted alternatives in this category.
A Dark Room
Minimalist text adventure game for your browser. ([Demo](https://adarkroom.doublespeakgames.com/))
Digibuzzer
Create a virtual game room around a connected buzzer (documentation in French). ([Demo](https://digibuzzer.app/), [Source Code](https://codeberg.org/ladigitale/digibuzzer))
Hypersomnia
Competitive top-down shooter blending Counter-Strike with Hotline Miami. Runs on Linux, Windows, MacOS and the Web. ([Demo](https://hypersomnia.io))
Lila
Ad-less chess server powering lichess.org, with official iOS and Android client apps
Luanti
Voxel game engine (formerly Minetest). Play one of our many games, mod a game to your liking, make your own game, or play on a multiplayer server
Mindustry
Factorio-like tower defense game. Build production chains to gather more resources, and build complex facilities
OpenTTD
Transport tycoon simulation game. ([Source Code](https://github.com/OpenTTD/OpenTTD), [Clients](https://bananas.openttd.org/))
piqueserver
Server for openspades, the first-person shooter in a destructible voxel world. ([Clients](https://github.com/yvt/openspades))
Quizmaster
Web application for conducting a quiz, including a page for players to enter their answers
Red Eclipse 2
Arena first-person shooter similar to Unreal Tournament
Scribble.rs
A web-based pictionary game. ([Demo](https://scribblers.fly.dev))
Suroi
An open-source 2D battle royale game inspired by surviv.io. ([Demo](https://suroi.io/), [Source Code](https://github.com/HasangerGames/suroi))
The Battle for Wesnoth
The Battle for Wesnoth is an Open Source, turn-based tactical strategy game with a high fantasy theme, featuring both singleplayer and online/hotseat multiplayer combat
Veloren
Multiplayer RPG. Open-source game inspired by Cube World, Legend of Zelda, Dwarf Fortress and Minecraft
Word Mastermind
Wordle clone. A Mastermind-like game, but instead of colors you need to guess words. ([Demo](https://word-mastermind.glitch.me/))