Phantasy Star Online: Blue Burst

From Sega Retro

A search for Blue Burst gives me two results on http://sega.jp/pc - Phantasy Star Online Blue Burst and Phantasy Star Online Blue Burst Episode IV. Which one is this and what's the other one? - Andlabs 12:31, 8 December 2011 (CST)

Following up on this since I have two product codes as well. We need someone who knows more about the PSO series to explain. - Scarred Sun (talk) 12:11, 14 April 2018 (CDT)