I dont play many games, so this is a review more for very casual gamers who are looking at LSW as a mild diversion and arent really sure what kind of game it is. This is my first Lego game so maybe all Lego games are like this, who knows?
Youre a little Lego guy (who you control), and youre with another Lego guy (that the computer controls). Its keyboard control only here — I think this was originally a console game. The game is set up so that two players can independently play the two active characters if you like, but for a single player, the second character (and later, a whole group of characters) just kind of follows you around. Youre allowed to switch on the fly between which character youre playing (e.g. I need to jump here. Which character can jump higher? Switch to them!), and part of the game is accumulating additional characters as you complete the stages. Its Star Wars; there are dozens. Fortunately the game gives you hints as you go through it, so you gradually learn why youd choose one character over another for a given situation.
There are 6 main stages, one for each Star Wars movie, and each stage has 6 sub-levels that take you through the movie. For example, the first level of Episode I is aboard the Trade Federation blockade ship, the second is once youve landed on Naboo... Dot dot dot, Ewoks. So you have something like 36 levels to explore. A lot of fun to be had.
Gameplay is very freeform. The Mos Eisley cantina is your "home base" from which you choose the stage you want to play. After a cute little cutscene, the two of you are plopped into some situation, and you wander around gathering coins (as all True Jedi do...) and figuring out how to open doors and stuff to move ahead. Being a kid-friendly Lego game, dying is not a big deal; you just explode into a pile of (your) coins and respawn, so eventually youre broke, but still alive. After youve finished a stage and go back to Mos Eisley, you can then choose better characters to go back in with again and again to collect everything you missed the first time.
Once youve cleared the first level in Episode I, all 6 movies are unlocked for you, so from there you can go in order or not, as you like.
And of course its Lego, so its always worth your while to stop what youre doing and compulsively assemble any piles of bricks that you find...
I think the game is cute; a light-hearted little version of Star Wars that you dont have to take very seriously. Worth the price.