Ufo Senshi Yohko Chan (MC-8123, 317-0064) is an arcade game. The numbers 'MC-8123' and '317-0064' may denote internal codes used during its development or distribution. Information regarding the developer, publisher, release date, and gameplay details is unavailable without further investigation.  The title indicates the game likely involves a female protagonist fighting UFOs, likely in a shooter or action setting.

Ufo Senshi Yohko Chan (MC-8123, 317-0064)

Ufo Robo Dangar (4/07/1987)