State-ris Lite app for iPhone and iPad

Fun and entertaining educational game for ages 4+ to 99. Based on the well-known Tetris concept, this game allows you to study U.S. geography while having fun! Up for a challenge? Fight off the UFO invasion while putting U.S. states in place.
 
CONTROLS: You can drag the falling states in the right place on the U.S. map, or use arrows underneath. Swipe off the UFOs with your finger to prevent them from spinning the state, or destroying state you have already placed. You can also change color of the background by using controls on the right side of your screen and pause the game at any time you see your boss coming.
 
SCORE: The game score is based on the shortest time spent for completion of each level. Each swiped UFO subtracts one second from your overall time. Each lost state adds two seconds, each missing state adds five seconds. Overall, the game has 50 levels with increasing difficulty. You can choose to play any level at any time. Think you got the best score? Tell your friends on Facebook.
Good Luck!