Summary: I bought this because like many I had Bubble Bobble and Rainbow Islands as a youngster. I know there have been pseudo-sequels to both of those games that ended up divating greatly from the simple platform, jump, collect and kill that made the game addictive and replayable. I have a PSP and when I say this was coming I got right in line for my copy. I understood from the game description there were some differences. I didn't realise just how many!