Phantasy Star IV (4) ROM Download for SEGA Genesis (Genesis) on Emulator Games. Play Phantasy Star IV (4) game that is available in the United States of America (USA) version only on this website. Phantasy Star IV (4) is a SEGA Genesis emulator game that you can download to your computer or play online within your browser. You can also download free ROMs such as Phantasy Star III - Generations Of Doom, Quack Shot Starring Donald Duck (JUE) (REV 01) and Thunder Force IV as shown below. Phantasy Star IV (4) works on all your devices in high quality.