Really lives up to the high-quality of the movies/books.
The game implements a little bit of everything, simple and intuitive hand to hand combat, gun fights (which are a little sloppy), and fun driving. Most of the game takes place before the The Bourne Identity (first movie) of what I have seen so far and it recreates some great moments from the movie and it really immerses you in them because as the player you get to be Jason Bourne, and experience the danger and espionage for yourself.
The game itself is linear and doesn't allow you to explore too much but that isn't a bad thing. The levels generally consist of lockpicking a door, killing the people inside, fight a boss down the road, rinse and repeat. It is a little repetitive at times but the Takedowns are so satisfying that it doesn't matter.
Takedowns are a computer controlled sequence that happens when you have at least one or more bars of adrenaline stored up. At any time when one is filled you can press the O button and launch into a series of killer moves that use the environment. If you're on the edge of a ship, expect to throw them overboard. By a bar? Slam them into the drink dispensers and watch beer go flying.
The game has three levels of difficulty which can be changed at any time, and it incorporates accomplishments into the game. Overall it's a major success and far better then most movie games I've ever played.