Yeah, I do like "sandbox" type games where I can roam, but I'm okay with linear games if they are well done. Love a good alien/zombie FPS.
Yeah, this game is good if you want atmosphere but like Omni said, it has it's major flaws. However, let me just say this game looks damn gorgeous on the PC. The lighting is insane.
Metro is also quite explicit when it comes to adult content and it's not side boobs but frontal. It doesn't even go with the storyline. It's random lol but the game is damn immersive.
Are you into open-world Fantasy RPG? Heard of the witcher? The 3rd installment of this game is going to open-end world type of game but the first two aren't. Though, they are still enjoyable.
Oh, and if you have kids, it's best that you don't play it when they are around. This game is quite explicit when it comes to boobs & language.