I just purchased an amazing game on the Xbox 360 the other day, Limbo. The game is all black, white and grey, the main character being a little silhouetted child. It's a side scrolling puzzle game that takes place in Limbo. The vagueness, art style and sound direction really make it interesting. The creepiness of the surroundings kept me hooked, and the ending was kind of shocking and nicely done.
Anyway, just drew this small image based on the game, mainly the ending.