Tom Clancy's Rainbow Six: Rogue Spear is a tactical first-person shooter video game developed and published in 1999 by Ubi Soft Milan and Red Storm Entertainment. It is the sequel to 1998's Rainbow Six game based on the Tom Clancy novel of the same name. Rogue Spear is based on the same game engine and features gameplay and presentation similar to that of the original Rainbow Six. The game pits the counter-terrorist unit, Rainbow, against global terrorist organizations that in some cases have taken hostages or have armed themselves with weapons of mass destruction. Rogue Spear focuses on realism, planning, strategy and teamwork. Tom Clancy's Rainbow Six: Rogue Spear was released for Microsoft Windows on August 31, 1999, with versions for the Mac OS (2000), Dreamcast (2000), PlayStation (2001), and Game Boy Advance (2002) released later. A PlayStation 2 port was also announced at the time, but it was later canceled.