Space Harrier Main Theme [Reborn] is an arcade-rhythm-game arrangement of the iconic main theme from SEGA's 1985 third-person rail shooter Space Harrier. The original composition was by Hiroshi Kawaguchi (credited as Hiro), whose FM-synth-and-PCM-drums sound design for the game earned widespread acclaim for its relentless forward momentum. The arrangement for maimai was handled by Nobuyoshi Sano, the founder of DETUNE Ltd. (now active primarily as sanodg / 佐野電磁), a veteran composer who previously scored Namco franchises such as Ridge Racer and Tekken. Sano's version preserves the original melody while introducing a bouncing synth accompaniment that gives the track a distinctive floating, techno-pop atmosphere. The song was added to maimai PLUS on February 20, 2013, as part of the [Reborn] series, a set of classic SEGA game music tracks boldly rearranged by celebrated composers. Over the years, its chart levels have been adjusted multiple times across maimai versions, reflecting the series' evolving difficulty standards. Beyond its Standard charts, the song became the subject of a legendary UTAGE (宴) chart added in maimai でらっくす BUDDiES on February 29, 2024. This chart, designated with the difficulty 「耐」 (14+?), carries 1,490 notes, the highest note count of any non-Buddy chart in maimai history, including the UTAGE charts of the older cabinet era.