Hidden footage
Select the "Special Features" option at the main menu. Press Right to highlight the spaceship, then press Enter.

Select the "Special Features" option at the main menu. Advance to the second screen of the special features section. Highlight the "Theatrical Trailer" option, press Right to highlight the Pyramid, then press Enter.

Select the "Cast And Crew" option at the main menu. Press Right to highlight the hidden icon, then press Enter.

Select the "Languages" option at the main menu. Highlight the "Features" option, press Right to highlight the hidden icon, then press Enter.

Select the "Scenes Selections" option at the main menu. Move through the chapters until a hidden Psychlo image is highlighted, then press Enter.

Enable the commentary in the audio options. At various points, a Psychlo letter will appear. Select it to view hidden footage. Alternately, advance to Title 19 through 32 and play them to view the footage.