The PSP edition of Lego Star Wars II: The Original Trilogy
There are two main differences compared to the console versions. There are no bounty hunter missions. The room that serves as the hub for the missions serves as the hub for this version's levels, the Boss battles. This allows players to play the boss levels from the non-PSP first Lego Star Wars game. Another feature is that during the vehicle missions, you can play as the minikit vehicles from the first game.
That's all I was mentioning for this game. The ability to take this version of the game wherever you go is a great feature for it. I haven't played a PSP game in a while since my PSP broke, but this was a game I frequently played. This is a must for PSP owners.