1. The game has 20 levels, each with a 5-second time limit
2. Starting with 1 digit and progressing to 20 digits, memorize the displayed number
3. Enter the number you remembered when the time is up
4. Scoring: Level 1 = 5 points, Level 2 = 10 points, and so on
5. Total possible score: 1050 points. 840+ points is excellent