■ 2 seconds you need - you can feel the speed and excitement.■ You can enjoy playing during a short break.■ Train your brain.You can wake up your brain anytime, anywhere every day.■ Have fun training with your family and friends.You can train your brain by competing and cooperating with your friends.■ Share your scores with people around the world.You can share your scores with people all over the world and have fun training.
2Sec Mental arithmetic
