Count de Coins game is about adding coins in your mind by using values of coins, to get the requested sum shown on the screen in limited time. If you get the right sum, then you can then proceed to next level where the requested sum is usually higher and bit more complex.
The game has two modes, easy and normal. In easy mode the time is not limited and coins are not on the move. The game can be played in euros(€) or dollars($).