If you haven't play this before, get it now !
Is real good deal consider is under $20 for 2 games. Even used ps2 game might cost about the same anyway.
The main improvement is the graphic, especially the gameplay graphic has dramatic improve by make it clear and sharp. But suffer in game engine gci which has similar ps2 flixr alike issue. The 3D movie GCi didn't supper same issue.
Sound is remain stereo, easily the best stereo game soundtrack i had heard so far. GOWIII has 7.1 sound which is will be very sweet.
The gameplay is short if you able to solve the puzzle fast or play as second time, most of the time was actualyl spend solving the puzzle. Some are very confusing, if wasn't for the guide it will be hard to pass for sometime.
The second has improve nearly every area of the first game, but is a bit too repetive and not too much flesh idea, the plot is bit too simple, however the ending is far better than the first movie, the end game CGI is among the best i see coming for ps2 game.
I would suggest you to rent if you not planning to play more than once in the story mode, there's challege mode but isn;'t too much to keep you playing.
This game did what it purpose to make the ultimate actiong ame experience for ps3 user that don't had the ps2 drive or never play before.