Rainbow Six: Raven Shield is the sequel to the immensely popular Tom Clancy's Rainbow Six: Rogue Spear, 2000 Action Game Of The Year, and Tom Clancy's Rainbow Six, 1999 Action Game Of The Year. It will be the third game in the Rainbow Six line, which has sold more than 6.7 million copies worldwide.
The Rainbow Six franchise is known for its action-packed game play and heart-stopping realism, and Rainbow Six: Raven Shield will continue the tradition. Developed by Ubi Soft's Montreal studio, in close collaboration with Red Storm Entertainment, Rainbow Six: Raven Shield features a brand new Tom Clancy storyline in which Team RAINBOW is led all over the world in a string of dramatic operations. The game will utilize graphics technology provided by the next-generation Unreal engine to power 15 new single-player missions that include the discovery of a cache of biological weapons and stopping an armed gang from terrorizing a London bank.
News source: Raven Shield website