Orx is a portable, lightweight, plugin-based, data-driven and extremely easy to use 2D-oriented gameengine. As orx is data driven, it allows users to create games with a small number of lines of code and reduces drastically the development time.
WFIRE is a low-level gameengine which provides a portable library allowing for writing video games for multiple classic targets. Originally written for a game called the Crypts of Eldor, WFIRE aims to provide compatibility with a number of constrained environments, such as DOS and the Amiga. It also aims for "new-retro" computers such as the Commander X16 and the Neon816.