Voxel game-creation platform with easy modding and game creation
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Free game engine for development of desktop, mobile, and web games
Cross-Platform C++ 2D/3D game engine
3D game engine/framework in C, with Luajit and Python bindings now
Powerful, mature open-source cross-platform game engine for Python
3D Game engine with editor
A refreshingly simple data-driven game engine built in Rust
A pure Go game engine
Injectable LUA scripting system, SDK generator, live property editor
Free, open source game engine online
Opensource crossplatform Fallout 2 game engine writen in C++ and SDL
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
A PICO-8 demake of the SCUMM engine
Go 3D Game Engine
2D Game Engine
2D Game Engine with Lua Scripting made on top of SFML
A cross platform Lua based game engine
Cross-platform 2D and 3D game engine
A fast, scalable, distributed game server engine/framework for C++
Planimeter Game Engine 2D - LÖVE-based game engine for Lua
Game engine for playing tomb raider 1 - 5 levels.
2d/3d Game Engine
A Lua Game Engine