These are in no way my favorite games or close to it... but picked solely for the fact that they won;t end and can have almost infinite replay.
1) Skyrim - It's one of the biggest open world RPG's and has an insane amount of content inside. Everything is pretty random and can be played in so many ways. And the PC version can have mods so infinite amount of lore.
2) RDR - Endless mayhem, horses, tons of guns, 3rd person, sandbox world, wanted system, zombies, tons of missions and content, coop modes, and awesome physics
3) Black Ops - Competitive, fast paced, campaign, nazi zombies, mini game zombies, perk/leveling system, best maps in cod imo, yeah pretty much needed 1 multiplayer type of game and this game had many other things i love along with it. --- RIP DP, gonna miss you bro! "Bwahhhhh" - Me http://dragonsdogma.tumblr.com/post/20794618336