Ok, Blue burst is a PC version of phantasy star online, Online only, and is free to download from
http://www.psobb.com the £6 a month hunters license fee is still there though.
It is essentially PSO ver1&2 for the gamecube. With an extra Episode (4) thrown in.
Episode 4 consists of 5 crater areas, and 3 subterrainian desert areas, where wonderfully named new monsters live. theres a few quests available for episode 4 currently, more are (apperently) on their way.
there is only one New boss, but there are 3 versions of it, one of which is a rare enemy.
some of the ep1 & 2 quests from the gamecube/xbox versions still need to be added to blue burst, but besides that, its great!
Oh yeah, and there is plenty of new weapons and items to discover
(duping is now, to my knowledge, impossible, hacking isnt much of a problem, and your characters are now perfectly safe)
I can go into the story of episode 4 aswell if you'd like O.o