Portal: Prelude is the brainchild of French native Nicolas Grevet. Unhappy with the prospect of just releasing another map pack, Nicolas crafted a story around 19 test chambers set in the pre-GlaDOS days of Aperture Science. Put together in a span of only nine months, coupled with a rarely seen (from a mod, at least) shock-and-awe style of unveiling, Portal: Prelude has caught the attention of many people—for good reason. It is a fine example of the kind of quality tightly focused development with little to no resources can bring about. The product delivers a genuine, challenging experience that doesn’t try and overextend itself.