The Nebula Device is a free multi-platform game engine that currently runs under Linux and Windows. It uses OpenGL or Direct3D to render and TCL/Tk for scripting.
Hyperplay is a GTK+ multimedia authoring engine designed for graphical adventure-style games. It plays a pre-compiled script that is made of several scenes, and it can keep its state in a saved file.
Exult is an Ultima 7 game engine that runs on Linux. It uses the data and graphics files that come with the game.
This is a multimedia tool for game development, with a comprehensive set of features. Users can develop 2D games for personal computers and mobile devices.
Plan, design and create game environments complete with animated characters and objects.