Flash Mental Arithmetic

■ Game Progress - When the game starts, random numbers with the selected number of digits will be displayed on the screen for a set amount of time. - You must enter the sum of the numbers within 11 seconds after they are displayed. - If you enter the sum within 11 seconds, the result will be displayed. - If your answer is correct, you earn 1 point and the game continues. The game ends if your answer is wrong or time runs out. - Get the highest score you can! ■ Features - Log in with Google Play to unlock achievements. - Log in with Google Play to submit your high score to the leaderboard and compete with players around the world. ■ Credits SE - https://taira-komori.jpn.org/game01.html For any questions, suggestions, or issues, please contact us via a review or email!