Kettou Beast Wars - Beast Senshi Saikyou Ketteisen is a Japan-exclusive Game Boy Color title from the popular Beast Wars franchise. This game likely focuses on action-oriented gameplay, featuring robot animal characters engaging in battles.   The game's title translates to "Beast Wars - Ultimate Beast Warrior Decisive Battle," hinting at a fighting or strategic combat system. The specific gameplay mechanics, however, would require further research into Japanese game documentation.  The developer and publisher of this game is likely a Japanese company specializing in anime or mecha-related video games during this era.

Kettou Beast Wars - Beast Senshi Saikyou Ketteisen (Japan)

Keitai Denjuu Telefang - Speed Version (Japan)