Uploaded November 2018 | Updated September 2026, 3 hours ago

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Playing the demo (only avaible this weekend). Some months ago, the name Decahextris went viral. Tetris Ultimate had introduced some new names afterwards: Perfectris if clearing 17 to 19 lines while "in the Zone", and Ultimatris if clearing 20 lines. My goal in this video is not to score high (I think you have to make T-Spins and Tetrises in this case) - I just try to achieve an Ultimatris followed by an empty board (perfect clear). I divided the playfield in 3 areas: the left 3 columns, the right 3 columns and the center 4 columns. Every piece was placed entirely in one of those the 3 areas.

Note that under circumstances, it's possible to clear 21 lines while in the zone with a similar approach like shown in the video. You would need an insane amount of luck though (clearing the last 2 lines with an O piece, filling the 4th and 7th column with the previous pieces):
tinyurl.com/y85x4z5j

edit: Someone did 21 lines. Apparently, you can increase your chances by using Initial Rotation.
youtu.be/aD_3ako5amI

Also, here's a quarter Zone Ultimatris by Wumbo
youtu.be/NG-H_en1vO0