Xenovcipher (ゼノサイファー) is a hardcore instrumental original track by Juggernaut., the producer behind the JuggerNoteRecords label, created for maimai DX Splash PLUS. At a relentless 210 BPM, the song fuses high-speed hardcore with dubstep-influenced bass drops and aggressive synth lines, hallmarks of Juggernaut.'s production style, which he has also brought to other rhythm game titles such as SOUND VOLTEX (Konami) and Arcaea (lowiro). The title's reading, "Zenosaihā," was confirmed by Juggernaut. on Twitter, blending "xeno" (foreign or alien) with "cipher" (a code or the numeral zero) to evoke a cryptic, futuristic identity. In maimai DX Splash PLUS, Xenovcipher debuted as a Perfect Challenge song within Shuwashuwa Area 2 (しゅわしゅわちほー2), requiring players to accumulate 666 km of total distance before the track would appear, an unlock condition that complements the song's dark, menacing atmosphere. The in-game movie was produced by HDLV (Kodai Endo), pairing stark cybernetic visuals with the track's relentless energy. From maimai DX UNiVERSE PLUS onward, Xenovcipher was made available by default across all regions, including Japan, International (Asian), USA, and China. The MASTER chart, designed by サファ太 (Safata) at level 14 (constant 14.3), is distinguished by a section before the key change that demands one-handed Tap and Tap+Touch patterns following a precise repeating rhythm, a technical passage that stands as the chart's signature hurdle. The EXPERT chart, designed by 小鳥遊さん (Takanashi-san) at level 12 (constant 12.5), similarly offers a demanding intermediate experience. Xenovcipher remains the only maimai original from Juggernaut. to date, carving out a distinct niche among the Splash PLUS era's boss-class tracks.