Catastrophe Crow! – Underground Level

'''Catastrophe Crow! – Underground Level''' is a video about Catastrophe Crow.

Overview
The player (as Mr. Crow) starts in the Grounds and finds a hidden tunnel. It leads to a door in the Work building with a large computer and keyboard. After solving the puzzle, a large crow head is revealed to be inside the computer, spinning rapidly. The player touches the head and the video ends.

Crow Language
Between 0:49 and 2:10, the player solves a puzzle by walking over computer keys, with the correct keys turning green. All the keys that turn green spell UEOWAOBLIZHJOQOVLCRLBKLG, which decoded from Crow Language produces "Please forgive me, both of you".

Keyboard Sound Cipher
Walking over a computer key produces a specific sound corresponding to that letter. This video is the basis of the Keyboard Sound Cipher, which is used in other videos.

Timer
After the U key is pressed, a 10-minute timer begins, though its purpose is unknown. A possible explanation is that the game and its puzzles were intended for Thea, and the long timer was to accommodate her injuries.

Video Distortion
The video has VHS distortion, suggesting that it is one of the oldest videos.