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:iphone: Collaborative List of Open-Source iOS Apps

The HTML5 Creation Engine: Create beautiful digital content with the fastest, most flexible 2D WebGL renderer.

🎮 Open-source, cross-platform 2D/3D/multiplayer game engine designed for everyone.

CSS is powerful, you can do a lot of things without JS.

rhythm is just a *click* away!

♞ lichess.org: the forever free, adless and open source chess server ♞

A retro game engine for Python

💿 Free software that works great, and also happens to be open-source Python.

Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.

An open source re-implementation of RollerCoaster Tycoon 2 🎢

Diablo build for modern operating systems

UI Automation Framework for Games and Apps

🏰 An exciting game of programming and Artificial Intelligence

Reduce the space taken up by games and programs on disk by using native Windows APIs

Complete Open Source and Modular solution for MMO

Diablo devolved - magic behind the 1996 computer game

Transportation planning and traffic simulation software for creating cities friendlier to walking, biking, and public transit

Static recompilation of The Legend of Zelda: Tears of the Kingdom to native Windows and Linux x86-64, with a Vulkan renderer. Game files not included.

A Cross-end HTML5 Game development solution

A mod to make and play Terraria mods. Supports Terraria 1.4 (and earlier) installations

The command-line tool for quick, simple deployment and management of Linux dedicated game servers.

Godot JVM GDExtension. Support Kotlin, Java and Scala.