Metroid: Zero Mission is a retelling of the original Metroid's story with a couple of new plot twists and updated gameplay.
This movie improves on the previous attempt by the same author by 12 in-game seconds and 34 seconds of real time. It was achieved by using a different route (killing Ridley before Kraid), allowing more efficient time-saving tricks and skipping an elevator cutscene.
The in-game clear time is 0:21:27. The item collection rate is 21%.