Action Replay CDX - Dreamcast
The Action Replay CDX acts as a boot disc. Users place the disc in a Dreamcast before playing, select cheats and then insert a regular game disc when prompted. It also acts as a freeloader, allowing for games from different regions to be played on the console. Cheats are not saved onto VMUs, but rather a black VMU-like device which is inserted into the Dreamcast controller instead.