The idea of this game Bills Slide emerged from a 5$ bill on my desk, and define it lasted no more than 15 minutes. This game is basically a simulator that tests mental mathematical ability, can be seen as a fun educational app, at least for those who can not count bills.
For the rest of us is an activity known when we buy at the store or when we receive the payment of wages, we have to count cash, and we count it well! otherwise we might lose money, they rarely win.
Slide Bills have levels but these are not visible to the player, the difficulty is increasing infinitely, to the point you could have a wad of cash and a certain time to count all. The denomination of the bills are included as we progress in the game to have all the "Hall of presidential": George Washington, Thomas Jefferson, Abraham Lincoln, Alexander Hamilton, Andrew Jackson, Ulysses S. Grant and Benjamin Franklin.
Already we are working on the first update, where the player can buy items to facilitate count more bills, such as: rubber fingers, leagues, weather and more.
It is an independent game born from simplicity that you can download only for Android for now
On Google Play goo.gl/VwRihi or find it as Bills Slide