No.
Undead Nightmare standalone disc is the Undead Nightmare, Legends and Killers and Liars and Cheats packs (possibly Outlaws to the End too) + Multiplayer.
There's a possibility your multiplayer lvl from RDR carries over when using the UN disc. I do not know as i have RDR and the UN download for Xbox but the UN disc for PS3
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
Only if you want to download the game, if you buy the undead nightmare disc the no you don't need the original red dead redemption.
For the game of the year edition you get both the original Red Dead Redemption, and undead nightmare.
nope
its on Undead Nightmare
In Undead Nightmare, the campaign missions end after you become undead. At this point the only thing you can do are stranger missions and work on getting 100 percent completion if you like achievements.
You can't play coop on Red Dead Redemption or Undead Nightmare.
You cannot get Red Dead Redemption - Undead Nightmare on the PlayStation Portable.
yes the multiplayer works but the single player is only undead nightmare
Well, you can get Undead Nightmare into the Red Dead Redemption disc if you download it from the PlayStation Store.
No you cannot join with the zombies in undead nightmare
It's in the same place as it is in the original Red Dead Redemption. In mexico