WLB writes: "I'm sure the first of many... here's SHIPS, a (er) ships simulator (maybe not quite a game then) built using Google Earth. In this ship simulation program you get to be the helmsman of your own fleet of ships. "Ships" will take you past worlds incredible scenery at a leisurely pace. All you need to play ships is a small Google Earth plugin. Actually they make it very clear that SHIPS is not itself a game, but a proof of concept:"