Ring Rage, the US version of the Game Boy game, likely shared a similar boxing or fighting gameplay foundation as the Japanese release. However, differences in graphics, sound, and perhaps even gameplay elements may exist due to localization or regional preferences.  Identifying the developer for the US release requires further research, but it shows the adaptation and localization of games across markets for the Game Boy. 

Ring Rage (USA)

Riddick Bowe Boxing (Europe)