I haven't played the DS or Advance versions of the game, but they are entirely different from the console versions. With the DS version employing a far less powerful 3D engine, and the Advance version using an isometric perspective to decent effect (from what people are saying).

But I did just recently get the PSP version and I have to say it is just about as good as the console versions. The only thing that really detracts from it is the loading time is actually noticeable between areas sometimes, but it's still not obnoxious or anything.

Since there was no Lego 1 for PSP, they have 3 doors in the "Jabba" room, one for each prequel, and they let you play the boss battles from the first game. Door one is Darth Maul, door two is DooKu, and door 3 is Darth Vader.

Also each level from the main portion of the game now has a new play option "challenge" mode where you have to find 10 blue minikits within a certain amount of time. Doing so will give you yet another brick and I think some of them unlock more characters from the prequels.

I almost played all the way through on X-Box (I have like 80% or something) but I am really enjoying playing it again on the go.