A version of セカイはまだ始まってすらいない with vocals by Hatsune Miku alone is also playable in プロジェクトセカイ カラフルステージ！ feat. 初音ミク.
The version which Hatsune Miku is the only vocal appears on ピノキオピー BEST ALBUM 2009-2020 「寿」.
Trivia
セカイはまだ始まってすらいない originates from the mobile game プロジェクトセカイ カラフルステージ！ feat. 初音ミク.
セカイはまだ始まってすらいない is unlockable in CHUNITHM PARADISE from January 21st to March 3rd, 2021 as part of the プロジェクトセカイ カラフルステージ！ feat. 初音ミク event MAP.
From March 4th, 2021, セカイはまだ始まってすらいない is playable by default.
In the Asian version, it was added to CHUNITHM NEW PLUS on January 12th, 2023.
This makes it the first song from before CHUNITHM NEW that was not added to the Asian version, but was added later.
セカイはまだ始まってすらいない was added to maimai でらっくす UNiVERSE on October 15th, 2021.
In the Asian version, it was added to maimai DX FESTiVAL on May 19th, 2023.
セカイはまだ始まってすらいない was added to オンゲキ bright on January 6th, 2022 as part of the event Chapter, Project SEKAI Colorful Stage! feat. Hatsune Miku (プロジェクトセカイ カラフルステージ！ feat. 初音ミク).
On セカイはまだ始まってすらいない's オンゲキ jacket, its title is translated into English as The World Hasn't Even Started Yet.
セカイはまだ始まってすらいない received a WORLD'S END chart in CHUNITHM LUMINOUS at launch in both the Japanese and Asian versions.
Genre Changes
None.
Difficulty & Notecounts
maimai difficulty rated 1 to 15 from でらっくす PLUS onwards.
CHUNITHM difficulty rated 1 to 14 from AIR PLUS to PARADISE LOST, 1 to 15 from NEW to LUMINOUS, and 1 to 15+ from LUMINOUS PLUS onwards.
WORLD'S END difficulty rated from 1 to 5 stars.
オンゲキ difficulty rated 1 to 15 from R.E.D. PLUS to bright, and 1 to 15+ from bright MEMORY onwards.
(Ratings and notecounts obtained from maimai on gamerch, and CHUNITHM and オンゲキ wikis on wikiwiki.)
