Tom Clancy's Rainbow Six: Critical Hour is a first-person action game with shooter elements from the masters from the Ubisoft Quebec studio. The game is published by Ubisoft. Tom Clancy's Rainbow Six: Critical Hour may be in development for PC, but this version has not yet been announced. It seems that Tom Clancy's Rainbow Six: Critical Hour turned out to be complete crap. This is evidenced by the low ratings on the Metacritic service.