FPS Unlocker for Roblox
A mod to make and play Terraria mods. Supports Terraria 1.4
Open-source rhythm game
Cross-platform 2D game engine (+ full OpenGL, +full OpenGL ES )
Compatibility tool for Steam Play based on Wine and other components
A generic, simple and fast implementation of Deepmind's AlphaZero
Open game and rendering engine packed into a JavaScript framework
A cross-platform PSP emulator
DeSmuME is a Nintendo DS emulator
API and runtime that allows access to VR hardware
One framework for creating powerful cross-platform games
Noob-proof (N)3DS Custom Firmware
Lutris desktop client in Python
Real Time Strategy game engine supporting early Westwood classics
fheroes2 is a recreation of Heroes of Might and Magic II game engine
A Native GOG and Epic Games Launcher for Linux, Windows and Mac
A programming font based on the typeface used in Minecraft
Open source simulation game based on Transport Tycoon Deluxe
The game engine for everyone
Home theater software and entertainment hub for digital media
Java/JavaFX/Kotlin Game Library (Engine)
Open Source real-time strategy game engine for early Westwood games
Ct.js is a desktop game engine that makes learning programming fun
Open-source engine for Heroes of Might and Magic III
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D