I really had to debate with myself about whther this is a B+ or A- game but I marked it up. It was a fun 6 nights of gameplay and I finished it in 12-15 hours.
It's a pretty good story IMHO and is fun to play in the darkness. It certainly has it's scary moments. I played it on Normal and I didn't have too many problems. I thought I would be unarmed in parts of the game but luckily I managed to find a cache of weapons and ammo just when I needed it.
The games creates a great environment. I t also makes you think a little bit before you plan your next move in certain situations.
I don't want to give away any of the sotry so I'll leave it at that.
Most of my games that I buy get a B+ or better grade on Game Revolution. And I have never been disappointed in any games that I bought based on those reviews.
I would definitely say buy the game.
It comes with a bonus episode coming out soon that is included if you buy the game new, plus there is a second episode(or chapter) coming out after that, but you have to buy the second one.