Most likely.
It depends, i was unable to play a Japanese game on my UK PS3, you may be lucky enough to be able to
two people can not play together on the same console on Red Dead Redemption.
No it is a stand alone disc that allows you to play the Undead Nightmare DLC without Red Dead Redemption
Most likely because there is something wrong with your disk or console
For the DLC pack, yes. If you buy it at the store or with a disk, then no. It's a stand alone game.
The game is single player and Multiplayer for the online version. You can read more details on the game and the multiplayer online option in the related link.
no you can not, you can invite friends on seperate consoles but you cannot play split-screen.
you need red dead redemption to play outlaws to the end
Millions.
You can only play Red Dead Redemption on your Xbox 360 or PS3 on the Xbox Live or Playstation Network
You can't play coop on Red Dead Redemption or Undead Nightmare.
No, you mnust be online in order to play Red Dead Redemption multiplayer.