月面基地 (Getsumen Kichi, meaning "Lunar Base") is a maimai DX track by prolific rhythm-game composer sasakure.UK, released on December 9, 2023, as a central piece of the Lunar Area (月面ちほー) content update for maimai DX BUDDiES. Running at 180 BPM under the Game & Variety (ゲーム＆バラエティ) category, the song channels sasakure.UK's characteristic energy—bright, synthesized arpeggios layered over a driving four-on-the-floor beat, with a melody that evokes the vastness and mystery of its lunar namesake. The MASTER chart, designed by アマリリス (Amaryllis), is a standout at level 13+ for its sheer physical demands. With 900 total notes—677 of which are standard Taps—the chart tests a player's stamina and precision over its duration, pushing the upper bounds of what the 13+ difficulty constant range typically asks. The Expert chart, arranged by 鳩ホルダー (Hato Holder), takes a complementary but distinct approach: a relatively sparse 367-note total is weighted heavily toward Hold (113) and Touch (53) notes, creating a chart that emphasizes sustained inputs and sensor-based interaction rather than rapid-fire tapping. Together, the two upper-difficulty charts offer contrasting windows into the same track—one a marathon of Tap density, the other a study in controlled, held patterns.