This is just a port of Megaman Legends for the ps1.
I don't know if they exactly did anything more with the game like extra dungeons or anything. With that said, I did manage to get this game for a fair price. So if your having a hard time tracking down an english copy of Megaman Legends and you have a psp and you don't mind following a walkthrough then this your way of being able to play that PS1 classic.