Which arcade cabinet hosted the arcade release of Rhythm Tengoku?

The arcade release of Rhythm Tengoku ran on Sega’s NAOMI arcade system.

Rhythm Tengoku first appeared as a Game Boy Advance game in Japan in 2006. After its release, Sega approached the development staff about adapting the game for arcades. The resulting version was reprogrammed for the Sega NAOMI platform and released in Japan on September 20, 2007.

NAOMI was closely related to Sega’s Dreamcast hardware, making it a practical platform for bringing the game’s timing-based play to an arcade environment. The arcade edition was not simply an unchanged GBA port: it supported multiplayer, introduced arcade-oriented credit and heart mechanics, and included revised presentation and remixed “Tempo-Up!” material.

The answer is sometimes confused with the physical cabinet model, because NAOMI hardware could be installed in different arcade cabinets. In the game’s technical credits, however, “Sega NAOMI” identifies the arcade system or platform hosting the release. The alternatives listed—Capcom CPS III, Namco System 246, and Taito Type X—are unrelated arcade hardware families.