well to start with i never was into the games which came with the movies ,but toy story 3 just changed the story
1.gameplay
2.achivements
3.Visuals
1.toy story has a smooth gameplay ,you never think for a minute that why you have picked up the game,its simply very SIMPLE ,the main campaign in 5 to 6 hours which is a bit short ,but then there is a TOY BOX in here you can play up to 12 hours of city building,unlocking cool gadgets for woody and buzz which you can then use for the future missions ,i found TOY BOX more addictive then the main campaign there are tons of other features like car racing tracks for buzz and horse racing tracks for woody.
2.Achivements are pretty easy to come by in toy story, with little or no effort you can easily earn 600 points .
3.one of the best things in toy story is its visuals .Disney did a great job
finishing word toy story is a good game you wont regret it if you buy it ,atleast i never did ,it should have been long and some multiplayer options would have been awesome.