It just has the game engine itself, without any of the images, sounds, maps, etc that make it System Shock.
GOG has a System Shock: Enhanced Edition, which also includes the original version of the game. I have no idea if that version of the data would work with this version of the engine, though. The engine is for the PowerPC Classic Mac OS version of the game.
GOG has a System Shock: Enhanced Edition, which also includes the original version of the game. I have no idea if that version of the data would work with this version of the engine, though. The engine is for the PowerPC Classic Mac OS version of the game.