I'm only about 3.5 hours in on the single player, and I can already declare this the best open-world game I've ever experienced. And it's not even remotely close. This is honestly the first time in an open world game where it can feel overwhelming with all the things going on, and where being sidetracked just exploring is not only a possibility, but a necessity. The plethora of side missions, of mini-games, of challenges keeps the game-play fresh (Rockstar North, Ubisoft...please take note). And it might be the most gorgeous console game in it's technical prowess. The sheer size of the game is fantastic, and it looks magnificent, but the TLC given to wildlife, to other NPCs, to the simple goings on that makes immersion real legitimate is what makes this game great. I also would like to declare the sound and soundtrack some of the best I've heard this generation - it's never too "in your face" with the music, but some of the tunes are fantastic. To put it simply, this is the "10/10" an open-world game deserves *cough* GTA IV *cough*. Rockstar San Diego succeeded where there sister developers failed - make the world beautiful, make it immersion, but most of all, make it a blast to be in. Buy this game.