Naomiduo 7z -

(using the Flycast core). They allow users to play arcade-perfect versions of classics like Marvel vs. Capcom 2 Crazy Taxi GDI/DAT Files : Inside the 7z archive, you will typically find

"NaomiDUO" usually signifies a collection or a dual-loading format designed for the SEGA Naomi arcade hardware. The extension indicates that the files are compressed using NaomiDUO 7z

files which contain the game's data tracks. The "DUO" branding sometimes refers to specific optimizations that allow these games to run on modified Dreamcast hardware or specific dual-boot setups. Compression Efficiency (using the Flycast core)