From SMS Power!

Credits: Wonder Boy III: The Dragon's Trap / Monster World II (モンスターワールドII)

From Game Gear version

Director

Ryuichi Nishizawa

Programmer

Takanori Kurihara

Designer

Hiromi Kurihara

Sound Composer

Shinichi Sakamoto

See the main page for Wonder Boy III: The Dragon's Trap / Monster World II (モンスターワールドII)