Genpei ToumaDen is likely an arcade game based on the Genpei War, a significant historical conflict in Japan. The game might be a side-scrolling beat 'em up, a strategy game, or a fighting game, depending on its mechanics. The title suggests a focus on historical events and characters, possibly a narrative that follows the conflict.  It's very possible it has been released in Japan only.

Genpei ToumaDen

Gemini Wing