World XO

Access
All platforms: Beat World B

PC (early normal): Type "quree" while in the hub world

PC (early speed trial): Type: "star4th" while in the hub world

Mobile (early, deprecated): Press the left and right page buttons in this sequence twice: "right, left, right, right, left, right, left, left"

Mechanics

 * Beat Intervals: 2, 1, ½, 1½, ¾, 1¼, ¼, 1¾.
 * Multiple tiles separated by ½ beat intervals are present.
 * Checkpoints are present (6).
 * Snails are present.
 * Double Snails are present.
 * Rabbits are present.
 * Not all tiles are displayed for certain sections.
 * Camera is angled 45° off for certain sections.

Trivia

 * Like World MO, One Forgotten Night (XO) used to be a custom level, published in December 17, 2020 (marking as the first ever custom level to become an official level)

Reference: Quree - One Forgotten Night (Extra) by Star4th


 * Following that, it first debuted as an April Fools 2020 level (can be accessed by typing a specific word in PC or a specific procedure in Mobile) before finally becoming an accessible level together with World XT.