here is a description from the video itself:

 

We're proud to present our new animated collaboration! This time, 58 artists from the Russian pixel art community ".pixel" got together and recreated the entire Neon Genesis Evangelion opening sequence — A Cruel Angel's Thesis — frame by frame. The song is accordingly remixed as well! The entire video is packed with excellent pixel art, silly jokes and well-hidden secrets, so grab a drink, arm yourself with a Morse code chart and feel free to scan through all the 2246 frames using "," and "." keys straight from the YouTube player. Dedicated to all the Evangelion fans out there!