Assassin's Creed Brotherhood (Xbox 360)
Assassin's Creed Revelations (Xbox 360)
Assassin's Creed 3 (Xbox 360)
Assassin's Creed IV: Black Flag (Xbox 360)
Assassin's Creed Rogue (Xbox 360)
Along with these there are 2 more games in the assassin's creed set: Assassin's Creed: Unity which is available on XBOX One and Assassin's Creed: Victory which will be released late 2015.
The order that I have listed these games is the order in which they were released. This set of games is worth every penny that is spent on them as they have amazing game-play and story-lines. Also the graphics are excellent quality. It's a choice to buy them all at the same time or individually but it's important to play them in release order as to understand the story-line.
I am an avid player of Assassin's Creed and i highly recommend buying these either for yourself if you love gaming or as a gift for anyone who loves gaming and action games. This games keeps the attention for hours on end and