Chronomia is an instrumental track by doujin composer Lime, first introduced to the rhythm game community through THE BMS OF FIGHTERS ULTIMATE 2016 (BOFU2016), where it secured 10th place in the overall ranking. Classified under the BMS genre tag "Dramatical," the composition is defined by its relentless 227 BPM tempo, dramatic melodic arcs, and the tagline "美しく儚く世界は廻る──" ("The beautiful and fleeting world spins──"), which captures the piece's contrast of elegance and urgency. The song belongs to a loose thematic trilogy by Lime that also includes Luminaria and Selenadia, each sharing a similar atmospheric yet high-energy compositional approach built around stylized constructed-language titles. In maimai, Chronomia debuted at the launch of maimai DX PRiSM in September 2024, available across Japanese, international, USA, and Chinese regions. Its MASTER chart, weighted at level 14 with a constant of 14.2, was designed by サファ太 (Safata), who embedded a dedication, "respects for 小鳥遊さん", as a nod to fellow maimai chart designer Takanashi-san. The EXPERT chart was handled by 鳩ホルダー (Hato Holder), while the lower-difficulty BASIC and ADVANCED charts offer a more accessible entry point for players encountering the song's high BPM for the first time. Beyond the maimai arcade, Chronomia has been licensed into an unusually wide roster of rhythm games, including CHUNITHM, ONGEKI, SOUND VOLTEX, Muse Dash, Phigros, 太鼓の達人, and several others, making it one of the most broadly circulated BMS-originated tracks in the modern rhythm game landscape. The original background animation for the BMS release was produced by inukoro.