A 2D game engine and level editor
Open-source, cross-platform, C++ game engine for creating 2D/3D games
Mahasona engine is an open source game engine.
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
Gorgon Game Engine (GGE) is a C++ game engine that handles many tasks.
a game library to develop audio games
TurboSphere is an easy to learn and powerful JS based game engine.
Cross-platform 2D game engine
Read and write PGN format and test moves for legality.
A simple WinAPI game engine
A high-performance C++ Sudoku solver implementing DLX algorithm