Like second albums, game sequels can be tricky things to get right. Thing is, when people say second albums are tricky, it's only for bands who have had massive success with their debuts, and they just end up writing about how tough fame is. For those bands whose first albums flopped, they get the opportunity for another go, proving - if you twist the words of F Scott Fitzgerald - that there's nothing but second acts in post-modern life.
So where does that leave Spectrobes: Beyond the Portals? Spectrobes was Disney's first original game on DS and did moderately well - perhaps selling (or at least shipping) a million copies worldwide. It must have been expensive to make, so Disney's bean-counters will have needed some justification to sign on for the sequel.