Mari0 is a PC game created by stabyourself.net in 2012 that combines the classic Super Mario Bros. with the puzzle-platformer Portal by giving Mario a portal gun. The game launched with 2 "mappacks", with the one most people played being the Super Mario Bros. mappack containing the original set of levels. This TAS instead showcases the other mappack which features 18 Portal-inspired puzzles spread across 9 different levels.

This time, lexikiq and WilliamFrog set off to complete the Portal mappack with the gelcannon, which is only accessible by inputting the famous Konami code. By abusing bugs and exploiting the physics engine, they clear it in record time.

Due to the high framerate used in portions of the TAS, the second downloadable encode preserves all of the frames whilst keeping the encode at regular speed.