Overview
Eureka is a collaborative track between veteran BMS and rhythm-game composer sasakure.UK, ArmyTom, and Bitplane, created for the BMS event BOF:ET, The Tower— (also cited as BOF:TT, Sonata for the 20th Ceremony—) in 2024, where it placed 2nd overall. The song was selected as a launch title for maimai でらっくす CiRCLE (DX CiRCLE), arriving on September 18, 2025 across Japanese, international, and North American regions simultaneously. With a driving BPM of 150 and a polished video by pam+HDLV (remastered for the maimai version), Eureka sits in the Game & Variety (ゲーム＆バラエティ) category. The Master chart stands out as a dual-designer collaboration between Luxizhel and サファ太 (Safata) at level 14 (14.1 constant), while the Expert chart (Lv11+, 11.6) was handled by サファ太 alone. The track's BMS genre classification, CLUB/STUBBORN, is carried over into maimai as an unlockable title.
Videos
Charts
DX
BASIC
3(3)
197 notesDesigner: -|Tap 172Hold 10Slide 5Touch 6Break 4
ADVANCED
7+(7.6)
328 notesDesigner: -|Tap 262Hold 28Slide 8Touch 24Break 6
EXPERT
11+(11.6)
475 notesDesigner: サファ太|Tap 294Hold 88Slide 46Touch 23Break 24
MASTER
14(14.1)
907 notesDesigner: Luxizhel vs サファ太|Tap 629Hold 112Slide 72Touch 60Break 34
Trivia
- Eureka was originally composed for the BMS event BOF:ET, The Tower— (also known as THE BMS OF FIGHTERS: TT, Sonata for the 20th Ceremony—) in 2024 and finished in 2nd place overall.
- The video for Eureka was created by pam+HDLV and was remastered specifically for its appearance in maimai DX CiRCLE.
- The song's BMS genre is CLUB/STUBBORN, which appears in maimai as an in-game title that can be earned by achieving Rank SSS on the Master chart. From CiRCLE PLUS onward, this silver title could be upgraded to a gold variant.
- Eureka has a length of 2:32 in its maimai version.
- The Master chart of Eureka is a rare dual-designer collaboration, co-created by Luxizhel and サファ太 (Safata). The Expert chart was designed by サファ太 alone.
- Unlike many BMS imports that appear in maimai long after the event, Eureka was added to the game within roughly a year of its BOF debut, making it a relatively fast adoption.
FAQ
- Who composed Eureka for maimai?
- Eureka was composed by sasakure.UK × ArmyTom with Bitplane (credited as w/z Bitplane). The video was produced by pam+HDLV.
- What version of maimai added Eureka?
- Eureka was added as a launch song in maimai でらっくす CiRCLE (maimai DX CiRCLE), released on September 18, 2025.
- What level is the Master chart for Eureka?
- The Master chart for Eureka is level 14 with a difficulty constant of 14.1, featuring 907 total notes (629 Tap, 112 Hold, 72 Slide, 60 Touch, 34 Break).
- Who designed the charts for Eureka?
- The Expert chart was designed by サファ太 (Safata). The Master chart is a collaboration between Luxizhel and サファ太. The Basic and Advanced charts have no credited designer.
- What BMS event did Eureka come from?
- Eureka was originally created for the BMS contest BOF:ET, The Tower— (also referred to as THE BMS OF FIGHTERS: TT, Sonata for the 20th Ceremony—) in 2024, where it finished in 2nd place.
- Is Eureka available in all maimai regions?
- Yes, Eureka is available in Japanese, international, and North American versions of maimai DX CiRCLE.
- Does Eureka have lyrics?
- No, Eureka is an instrumental track with no lyrics.
External Links
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