Limbo

A young boy wakes up in the middle of a dark, eerie forest on the "edge of hell" to search for his missing sister. Navigating a treacherous, monochromatic landscape filled with deadly traps, giant spiders, and hostile children, he relies on wits and physics to survive. After crashing through a glass pane into a gravity-shifting factory, he is thrown back into the forest, finally discovering a girl weeping over a grave-like patch of earth.