Rainbow Six 3 is a tactical shooter game DEVELOPED by UBI. The game is a first person shooter based on Tom Clancy's best selling novel by the same name. The game has two expansion packs, Athena Sword and Iron Wrath.
The plot of Ravenshield is fully explained by Wikipedia (Tom Clancy's Rainbow Six 3). Basically it is all about an elite anti-terrorist group called Rainbow Six, a team bent on foiling the Neo-Facist terrorists doing damages on South American oil interests and European financial institutions.
Having gotten the notion from his clan team, Xanatos has decided to make a map based on the popular Call of Duty, Black Ops. He has followed the CoD map almost ot the last detail except for some part where he took some liberties. All in all, the Ravenshield map is superb. To qoute the author, "Seven houses surround this quarantined cul-de-sac. In the distance you can see a double rainbow and mountain ranges beyond.".
NOTE: Go to this site, RVSGaming for more info on the map. It's author, Xanatos is a legend in his own time. The modes of Nuketown are SP and MP. He made several Ravenshield maps like Big Office, Blue Dawn, Apogalacticon, Calle Juella, and more. Click here for the complete map list with downloads.