Summary: I found this game a huge disappointment when compared to the other lego games. It is confusing, there is no where to enter codes, trying to figure out the levels or work through a level is very confusing. Badly planned and extremely disappointed in this one.
Conclusion: I loved the first game which was essentially the same as the PS2 version. However, this PSP version does not seem to be same game as the PS3/Xbox360/ Wii version of the game. From what I can gather it is the same as the DS version and I think is a "light version" of the game. For instance, the first section of the full game has 5 story levels but the PSP version only has 4 fairly short story levels. Once I figured that out and got over my disappointment I have enjoyed.
Conclusion: I LOVE this game! You can do all the stuff you could do on the previous lego indiana jones game, plus minigames, never seen before levels and, of course, the story of the kingdom of the crystal skull! This is good, as this film wasn't included in the previous game. Don't be put off by the fact that it's lego, it just makes it more hilarious! I should know, I'm a teen! Well worth the money; if you like indiana jones and lego, you MUST get this game!
Summary: This item had several negative reviews (including mine). Why are they all missing now? Anyway, the bottom-line is that this is a terrible addition to the Lego franchise on the PSP. It is nothing like the original Star Wars/Indiana Jones/Batman Lego games in terms of gameplay, puzzle solving, humour, you name it. Spend your money on something else, unless you like boring, simplistic gameplay with controls bordering on broken, and bugs a-plenty.