Assassinís Creed 3 has been marketed as a re-imagining of the Assassinís Creed franchise, and moves away from the architecturally magnificent cities in the previous games, towards a more natural environment. Thatís why this game is so different from the previous games, because it adds a whole new element to the environment which previously didn't exist. So if you've never played an Assassinís Creed game before, this is the best time to get into it because you donít need to know too much about Ezio and Altair story, and what you do need to know is explained to you in a short video at the beginning.
You play as Connor, a young Native American man who wants to protect his village, which leads him to becoming an assassin. There is actually a significant portion of this game that is dedicated to explaining Connorís back-story. In fact, Iíd argue itís a little too much, because it took me around 4 to 5 hours to complete the first section of the game, only after which I found Assassinís Creed 3 actually gets into its own. Itís difficult to explain what happens in this section without ruining the surprise, but suffice to say, this game is a bit of a slow burner and Iíd recommend you stick with it.
This game takes place during the American Revolution, where Connor finds himself in the middle of some significant battles, although he isnít always on the side of the Patriots. One of the main things to understand about the story is that not everything is black or white; there is a lot of gray area. Connor isn't as flamboyant as Ezio, heís much more of a strait-laced good guy, so you canít help but like him. However, even the main enemies in this game are quite likeable, and you never really hate them like the outwardly evil enemies in previous games, something which you will understand if you play this game.
The biggest difference with Assassinís Creed 3 is that you now can traverse through trees, and up non-standard shaped features such as rocky outcrops, as well as buildings as you normally would be able to do. Free running is much easier now and a lot of stuff has been done in the back-end to make sure that Connor doesn't fall off when you donít want him to. You can now simply hold the R1 button to automatically free-run through the trees and other environment without falling off. However, in order to actually get on a tree, you must either find a spiky tree or a log that has fallen over.