The sequel to the first person tactical shooter Rainbow Six from Red Storm Entertainment. Like the original, the player must lead the multinational anti-terrorist squad known as Rainbow through various counter-terrorism missions set in a variety of locations and environments. More than just another run and gun shooter, each mission begins with a planning stage in which the player assembles his team and decides exactly where each person will go and what they will do throughout the execution of the plan.
However, the characteristic which truly distinguishes the Rainbow games from other FPSs is the level of realism. Terrorists react realistically to their environment. Hostages become frightened under pressure. Team members panic under fire. Most importantly, gun ballistics are accurate. One shot will most likely kill, and dead is dead.
Additional improvements over the original game include a tweaked graphics engine, weather effects, snipers, somewhat better terrorist AI, and vastly improved team bot AI.