GAMEX(1983, zodiack, 0, zodiack, zodiac, 0, ROT270, "Orca (Esco Trading Co, Inc)", "Zodiack", GAME_IMPERFECT_COLORS ) /* bullet color needs to be verified */
GAMEX(1983, dogfight, 0, zodiack, dogfight, 0, ROT270, "[Orca] Thunderbolt", "Dog Fight", GAME_IMPERFECT_COLORS ) /* bullet color needs to be verified */
GAMEX(1982, moguchan, 0, zodiack, moguchan, 0, ROT270, "Orca (Eastern Commerce Inc. license) (bootleg?)", /* this is in the ROM at $0b5c */ "Moguchan", GAME_WRONG_COLORS )