Millions.
There are two, Red Dead Revolver, and Red Dead Redemption and Red Dead Redemption Undead Nightmare
you need red dead redemption to play outlaws to the end
You can't play coop on Red Dead Redemption or Undead Nightmare.
You can only play Red Dead Redemption on your Xbox 360 or PS3 on the Xbox Live or Playstation Network
No it is a stand alone disc that allows you to play the Undead Nightmare DLC without Red Dead Redemption
There is no such thing as Red Dead Redemption black there is only the regular Red Dead Redemption and Red Dead Redemption limited edition.
Only if you get the download version. If you buy it on disc, no
There is no such thing as red dead redemption 2 and there are many girls in red dead redemption so you need a less vague question
No, you mnust be online in order to play Red Dead Redemption multiplayer.
No - Red Dead Redemption is for Playstation 3, Xbox, or PC. Its predecessor, Red Dead Revolver, was available for PS2 play.
No, if you buy the one for 20 dollars that is undead nightmare but not the original. The only way to get both is buy the Original Red Dead Redemption and then buy the Undead Nightmare add-on
Red Dead Redemption happened in 2010.