By default, there is no narration for the Escape Pod Ending.

A fan who saw the speculative ending contacted Kevan Brighting and got him to speak those lines of which Kevan then posted it on SoundCloud

The fan then made a possible alternative ending with the audio.

We're finally free.

Free of the never ending cycle, free from the confusion, free of all that button pressing, the limitless corridors..

..Not to mention all free of those bloody endings.

No more restarts, no more fade to black.

We did it.

The world is our oyster!

Come Stanley, to freedom!

(Freedom echoes many times into the distance)