Mirror's Edge is an extremely fresh game and has single handedly created a new genre of game, which is very fun to play.
When the game first begins, a 2D animation cutscene ensues explaining the background to the city and why Faith (the main character) has become a Runner (an illegal rooftop courier). The idea to use animation for a cutscene really works for this game as it goes well with the stylised look of the city, which I thought was amazing. The skyline is very bright, with skyscrapers made mainly of glass and white buildings covered in bright orange, blue and red patches. The modern use of colour really makes the game feel contempory.
The story is not very long (roughly 6/7 hours depending on your ability) but is is very believable and draws the player in. Each level is also well planned and gives a new experience every time with new buildings to scale using a variety of Faith's free-running moves. My favourite was a subway level which sees faith leaping from train to train. The ability to select chapters and even specific checkpoints in that chapter once the game has been completed is also very useful.
There is online play in the form of Time Trials where you run through certain sections of the map and try and beat the set time. These are fun, but can be frustrating as the times required to qualify are very low and hard to beat. This is the same with the offline Speed Run mode which is the same as Time Trial just not online (and much harder).
Overall, DICE and EA have certainly brought something new to the table with Mirror's Edge which is extremely immersive and fun to play (occasionally you can feel yourself moving with Faith to try and get her to grab ledges etc.) and with rumours of a sequel - I cannot wait for the next one.