A group of developers shares their experience of designing "Mars Sucks" -- a game prototype that runs entirely inside Google Earth. "We decided to overlay an image of a Martian craft cockpit over the Google Earth window and let the standard Google Earth controls handle moving around the globe. In the cockpit, players see a sequence of clues about the location of each Martian invader. Each clue gets more specific about where to find the Martian."
-- via pasta and vinegar
