Open Source Web-based Games

Lichess is the most complete chess experience, with a simple interface that focuses on the game, a massive array of game related tools and a huge, worldwide community.

2048 is a popular sliding puzzle game written by 19 year old Italian designer Gabriele Chirulli based on 1024 which in turn was based on Threes! .

Freeciv is an open-source, turn-based strategy game based on Civilization II. Inspired by the history of human civilization, the game commences in prehistory and your mission is to lead your tribe from the stone age to the space age...

Boardzilla is a place for playing and developing board games all within your browser. Boardzilla makes it easy to express the game rules and provides players with a simple interface to the choices available to them.

An open source game about breaking bricks, catching coins and picking upgrades.

GeoHub is a free to play geography guessing game. It features single player, challenges, country streaks, a new daily challenge, custom maps, and is home to the famous "A Diverse World" map.

Rhythm game for Windows, Mac, and Linux. It features 3D graphics, keyboard and dance pad support, and an editor for creating your own steps.

Friday Night Funkin’ is a musical rhythm game where you compete in freestyle music battles.

Hurry Curry! is a cooperative multiplayer game about cooking. You work at a restaurant accepting orders, cooking various dishes and serving meals to customers. But don’t take too long, as customers might get impatient. The game is free software, licensed under the AGPL 3.0 only.

PlayCanvas is the world’s easiest to use WebGL Game Engine. It’s free, it’s open source and it’s backed by amazing developer tools.

Warsow is a completely free fast-paced first-person shooter (FPS) for Windows, Linux and Mac OS X, set in a futuristic cartoonish world where rocketlauncher-wielding pigs and lasergun-carrying cyberpunks roam the streets.

A game where you have to find where you are , with panoramax pictures and openstreetmap map.

A Dark Room is an incremental clicker game with a minimalist interface and intriguing story.

Minecraft is a game about breaking and placing blocks. At first, people built structures to protect against nocturnal monsters, but as the game grew players worked together to create wonderful, imaginative things.

In VVVVVV, the player controls Captain Viridian, who is lost in an alternate dimension, in search of the missing members of his spaceship's crew. Instead of jumping, the player is able to control the direction of gravity, allowing Captain Viridian to flip between the floors...

BlokDust is a web-based music making app. By joining blocks together, you can build synthesizers, put effects on your voice, remix & manipulate samples and arrange self-playing musical environments.

A collection of small computer programs which implement one-player puzzle games. All of them run natively on Unix (GTK), on Windows, and on Mac OS X. They can also be played on the web, as Java or Javascript applets.

NetHack is a single player dungeon exploration game that runs on a wide variety of computer systems, with a variety of graphical and text interfaces all using the same game engine. Unlike many other Dungeons & Dragons-inspired games, the emphasis in NetHack is on discovering...

WintrChess is a web-based chess app that lets you analyze and review games with the Stockfish engine. Built in TypeScript, it provides a clean, modern UI and online analysis features.

Sandboxels is an in-browser falling sand simulation game, with mechanics such as heat simulation, electricity, density, chemical reactions, fire, explosions, and over 500 unique elements to play with.

Kaetram is an open-source game engine created to aid those interested in entering the game development realm, and intended to be used as a learning tool. The codebase is simple, clean, and intuitive. The original idea is based on Little Workshop's demo game—BrowserQuest...

Online browser-based RTS game.

Powerful, customizable, cross-platform, opensource table sandbox game.

AAAAXY is a nonlinear 2D puzzle platformer taking place in impossible spaces.

A modern, endlessly fun trivia game powered by Gemini AI and Firebase. Challenge your knowledge with a continuous stream of unique questions, compete for high scores, and climb the leaderboards!