GA: "Limbo doesn’t need much. It doesn’t need colour, for example. The entire game exists in shades of black, grey and white - characters, objects, obstacles and locations all standing out or obscured by the silhouetted world.
It doesn’t need much in the way of characters, either. You’re a small boy, looking for his sister in an eerie and deadly world. You won’t meet a single other soul as you journey through this monochromatic world - and any soul you encounter has your death on its mind."