blotunga: I've never played any of the Lego titles. Are they any good? Any region lock?
They're all charming, but the gameplay is very simple and repetitive.
They are fun co-op brawlers and they usually have a lot of secrets and a good sense of humor.
Except for the story though, if you've played one you've played them all.
They're very much not real platformers though, 90% of the gameplay is running around and punching enemies and breakable objects to collect coins in order to unlock more characters and such.
If you're into comics I would recommend the Marvel one or Lego Batman 2 because they have an open world to explore and a lot of interesting characters.
Long story short, if you like cute and funny 3D brawlers they're great.