s&box is a modern game engine, built on Valve's Source 2
YimMenu, a GTA V menu protecting against a wide ranges
One of the best Prodigy hacks
Real Time Strategy game engine supporting early Westwood classics
Widelands is a free, open source real-time strategy game
Endless Sky is a sandbox-style space exploration game
The most customizable typing website with a minimalistic design
A modular Common Lisp game engine
Build multiplayer web games played by millions
Free and open source real-time strategy game
Make Minecraft Java Edition mods, Minecraft Bedrock Edition Add-Ons
Open source Old School RuneScape client
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Mod manager for the video game RimWorld
C# application with primary purpose of farming Steam cards
Open source clone of the Age of Empires II engine
Multi Theft Auto is a game engine
A refreshingly simple data-driven game engine built in Rust
A bridge/proxy allowing you to connect to Minecraft
RetroArch is a frontend for emulators, game engines and media players.
UCI chess engine
Xash3D FWGS engine
A Native GOG and Epic Games Launcher for Linux, Windows and Mac
A free and open-source Touhou Project fangame
UZDoom is a feature centric port for all Doom engine games