Cybernations - Here is a description from the site: Welcome to Cyber Nations, a nation simulation game built around Google Maps. Create a nation anywhere in the world and decide how you will rule your people by choosing a government type, a national religion, ethnicity, tax rate, currency type, and more in this new geo-political, nation, and government simulator. Build your empire by purchasing infrastructure to support your citizens, land to expand your borders, technology to increase your nation's effectiveness, and national improvements to build your nation according to your choosing. [via]
Google Maps Quiz - Look at the satellite image and click on the map to guess where that location is. Google Maps Quiz instantly tells you how wrong you are since guessing right seems near impossible! :) Cool little game.
For more games based on Google Maps check out the Games category here on Google Maps Mania!