The map files were the second portion on the ARG's content being linked to from both a Hex string in the Clip095.mp4 YouTube video and from a response sent from the provided email address.
_1 is a map file in which the player's view is tied to a designated spot while a "Shepard Tone" plays in the background. However upon disabling the view controller and exiting the room a second sound file is played and an image is displayed on screen.
Playing map with view controlledEdit
Playing map with view control disabled and exitingEdit
 (Embed deleted here due to technical difficulties, also this video showcases a screamer that is part of the map, please turn your volume down to avoid a massive heart attack.
_2 is a map in which the player is in a maze of ventilation, the level has two endings, one in which the player "dies" and it taken to a white room in which a strange drone plays. As in the other ending the player is presented with a creature coming at them and the game crashes.
"Death" Ending[skip to 2:00]Edit
foundonthetape_3.BSP[Download Link - http://www.megaupload.com/?d=YXIGHUJO]Edit
Map 3 is very similar to map 2 in that you have to navigate through tunnels and such. This map was given to the first 10 emails to email@example.com saying TAPEONTHE.
foundonthetape_4.BSP [Download Link - http://www.megaupload.com/?d=BXXC8LR0]Edit
The YouTube user foundonthetape posted the following message:
When run through a binary-to-text translator, the link to the fourth map was obtained.
An audio file called radionoise1.wav was also found. It contained mores code that translated to, "NOWAYOUT.NOESCAPE.FORSOLONG.SENDHELP.DONTFOLLOWTHENOISE.NOESCAPE."