This is an excellent, excellent game and quite possibly one of the most entertaining on the PSP yet.
It's actually pretty strange that playing through three stories that are so well known could actually be fun, mainly because you know what's going to happen in the end, but you'll find yourself playing for hours.
If, like me, you're a Lego fan then you'll love how like real Lego the characters look. They haven't tried to remodel them or change the way the figures move and I think that is to the developer's credit.
Completing each chapter isn't necessarily difficult because you don't really have 'lives' as such; you just lose Lego 'coins' every time you die and you don't want to do that because then you can't be granted the True Jedi title!
The goal is to complete each level in 'Story Mode' and then go back in 'Free Play' and collect all the things you couldn't reach before because you didn't have the right character - for example, once you've accessed Darth Vader, you can go back and use the Force (because we'd all love to!) to move certain objects to help you complete the parts that were impossible before.
There are no time limits on the levels (until you play the Challenge modes) and you can explore in Free Play as much as you like. Put simply, you really should check this title out and if you don't like it, I really would love to know why!
Cannot wait for Lego Indiana Jones and Batman - awesome!