Apathy is a small demo of only 4 kilobytes in size (executable size). It includes a procedurally generated 3d scene, with generated textures and a (dull, selfmade ;)) soundtrack which is played by a realtime software synthesizer.

Tech used: Pure assembly, DirectSound, Direct3D

Download: Apathy 4k (4kb Windows executable)

Apathy, first screenshot

Apathy, second screenshot