I think PewDiePie and bros should play Darksiders 1 or 2. I have played and beaten Darksiders and thoroughly enjoyed it. The sequel, Darksiders 2 is released on August 14, 2012, but I would recommend playing Darksiders before you play the second. Darksiders is about one of the four horsemen, War, is accused of starting the Apocalypse and is sent to set things right. the human race becomes wiped out. Along his journey he encounters angels, demons and other enemies he must fight. There are also some puzzles he must solve. The full Wiki page is here:
darksiders.wikia.com/wiki/Darksiders . If you go to youtube.com and search "Darksiders", there should be many results for you to watch. The second game is about War's brother, Death trying to find proof of his brother's innocence, because he knows that War did not start the Apocalypse. This game takes place during the same time frame as the first. Here is the wiki link: darksiders.wikia.com/wiki/Darksiders_II . Here is a link to Darksiders 2 media:
http://www.darksiders.com/videos . Here is a link to Steam to purchase the first game:
store.steampowered.com/app/50620/ and here is a link to purchase the second game (when it comes out):
store.steampowered.com/app/50650/?snr=1_7_suggest__13 . I hope you will play it and enjoy it as much as I did.
*brofist*