Well, started playing Yesterday...and I am totally into Single Player...Good gfx + Good gameplay + good story+good Ending= Good enough for me.
Graphics is really awesome even sometimes I thing those YouTube gameplay trailer did not do justice...Giving no Lag in my system.
Those who are expecting reality in gfx section, it is NOT offering you that, kinda like a well detailed animation movie...
Gameplay is huge...Lot of area to cover ,it got Gliders, zip lining and blah blah. Crafting medicine and Leather Pouch by collecting herbs and Hunting animals(Yuck) is kinda inspired from other obvious RPGs.
Dunno why I feel like they made an effort to make First Person Movement seem like very realistic...Camera Angle, Walking varies on Different kind of Plains.