Have you ever seen the movie Night of the Living Dead? What that movie did is present a bleak outlook, created deepened horror, and created a contrasting effect on the subject matter by deciding to use black and white in lieu of color. It works extremely well and adds another layer of depth to the film. When used properly(like the aforementioned film) this trick can add more artistic merit to the film and in the end what you get is more of an experience more so than entertainment.
So, why am I talking about movies when I should be reviewing a video game. Well video games have as many things in common with movies as they do differences. One of the things they have in common is how an artistic choice can have a major impact on the whole of a game giving it a whole different meaning. This artistic choice in question is the use of black and white. In the 2D side scrolling platform/puzzle game Limbo by Playdead Studios you traverse a world completely devoid of color as you push forward to discover the purpose of your journey. The lack of color in this game creates a harrowing experience that, unlike a movie, can only be experienced in video game form.