Jake2 alternatives
Jake2 is a free and open-source game engine built using Java and 3D graphics. It represents a reimplementation of the Quake2 engine originally developed by id Software, leveraging libraries like JOGL and JOAL for rendering and audio. The engine requires game data from the original Quake2 or a downloadable demo to function, and is compatible with Linux, macOS, Windows, and can be accessed online.