The copyright text appeared like this on the USA NES version: COPYRIGHT ©1988 BYCAPTAIN POWER PRODUCTIONS, INC. COPYRIGHT ©1988 BYULTRA GAMES, INC. EXCLUSIVELY LICENSED AND PUBLISHED BYULTRA GAMES, INC. ULTRA GAMES IS A REGISTEREDTRADEMARK OF ULTRA SOFTWARE CORPORATION. PROGRAM AND AUDIOVISUAL BYRARE LTD. / RARE COIN-IT, INC. LICENSED BY NINTENDO OF AMERICA, INC. The copyright text appeared like this on the PAL NES version: COPYRIGHT ©1988 BYCAPTAIN POWER PRODUCTIONS, INC. COPYRIGHT ©1988 BYKONAMI INDUSTRY CO., LTD. PROGRAM AND AUDIOVISUAL BYRARE LTD. / RARE COIN-IT, INC. LICENSED BY NINTENDO