Bonus:-  Enter A725X4 as a code to unlock a bonus feature.

Passwords  -  At the diner counter, choose to enter a code. Note: For the characters, these only unlock them on the purchase menu, you must still pay to use them.

Unlockables  -  The four secret charters and The secret level 

Unlockable How to Unlock  -  Darth Vader Just beat the secret level
Princess Leia Beat the secret level and then buy her from dex or use the code and then buy her
Rebel Soldier Beat the secret level and then buy him from dex or use the code and then buy him
Secret Level To unlock this secret level you must get true jedi status in every single level
Storm Trouper Just beat the secret level

Secrets  -  Massive amount of blue studs and hearts  -  In the secret level there is a room with a ton bricks you may think to your self "so this is were the put to bricks they did not use" but a closer look show they can be moved by the force to spell lego but it is not as simple as it sounds.

First you start with the yellow bricks  -  To start of the "L" force move the long piece then putting the short peices on top of it.

Next is the "E" it is made of blue bricks  -  first you move on of the blue long piece, then you put a short piece on top of it, now for the two piece medium, after that put the last short piece, and after that the last blue long piece.

Next is the hard green "G"  -  First put the green long piece, then comes the briged piece (two pieces connected by a gray piece), then two short pieces, and tehn a long piece. I know this hardly looks like a a "G".

Last is the simple red "O"  -  First is a long piece, then all of the briged pieces, then the last long piece.

After a moment you will hear a boom and then hearts and blue studs will fall.
You might need a friend to help you collect them all.