Download and try the following examples:
3d Maze - this is a complete project for Fantasm. The aim was to write the basics of a very simple 3d isometric maze in under 1K. We failed by a few bytes but we're not moaning too much about it.
Eclipse. This is a native shoot everything type game example that demonstrates sprites, sound, scrolling and doing lots of things "simultaneously". This is the executable. The project is supplied with Fantasm 5 (not the Lite version).