Even or odd Mental calculation

The game consists in calculate on a given time if the result of the operaiton on screen is even or odd. The faster you are the more points you can earn! Check your results against your friends to see who have the quickest brain!

- The highest score is recorded so you can beat yourself or a friend.
- The speed of your response and your level directly influence the final score - answer quickly!
- The difficulty increases with each answer