Refer to SegaRetro for a general hardware overview and list of games. The only real information you’ll find on this system is what’s documented in the MAME source. About the only observation I have which appears to not be written down elsewhere is that the communication board appears to only have been present on Cool Riders, not Aqua Stage. It seems likely that Sega had big plans for this system when it was designed, but ultimately the system was abandoned shortly after it was developed.

System Pictures

Miscellaneous Photos

Here’s a collection of images of this system that have been posted online from various sources: Hardware Photos