C++, SDL 2 and SFML game engine that allows to create games on Web (HTML 5), Mobile and PC.
ZLIB License
Dagor Engine and Tools source code from Gaijin Games KFT
Free (as in freedom) open source clone of the Age of Empires II engine 🚀
A library to allow writing Unity scripts in native code: C, C++, assembly.
A Free/Libre and Open Source Software Qt based Minesweeper game available for GNU/Linux, FreeBSD ...
projectM - Cross-platform Music Visualization Library. Open-source and Milkdrop-compatible.
C++ open source 3D game engine
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D engine that enables developers ...
Open-source, cross-platform game engine designed to be used by everyone.
2D Game Engine with Lua Scripting made on top of SFML !
Unity Scripting in C++
Axmol Engine – A Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games. (A fork of Cocos...
Cocos2d-x is a suite of open-source, cross-platform, game-development tools utilized by millions ...
Defold is a completely free to use game engine for development of desktop, mobile and web games.