Undead nightmare combines a good campaign with the same online multiplayer as red dead redemption for those buying just the undead nightmare (not add-on). The campaign shows you trying to survive in the western fronteir while infected try and stop you. The challenges inside are good but getting to them takes time as most are spread apart and take to long by even horse to reach. Online multiplayer has free roam and other game modes like liars dice and stronghold (my favourite) but also undead horde which is simular to nazi zombies (call of duty) or firfight (halo). The aim is to stay alive as long as possible through the endless waves of infected while playing with friends or others online. Overall this game is good but could be improved. If you already have red dead redemption then i would say only buy the add on if you really want to but if not buy this game seperatly as you still get the best bits of the previous game.
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