The concept is simple: you get shown a random Street View, and then have to guess where you are on the planet -- a game that anyone who's been to a bachelor party will be familiar with.
Make your guess by dropping a pin on a tiny G-map, then get scored on just how close/far you were, as well as seeing some hilarious village names.
You can still navigate back and forth, so it's sometimes useful to look for clues; for instance, one step backwards, and an anonymous desert highway…
… can be nailed down to a country. Or continent. Whatever, it's better than nothing!
You get five shots, after which your scores are tallied and counted, and you'll be shown a map showing just how far wrong you were.