1. 20 levels in total, 5 seconds per level
2. Numbers increase from 1 to 20 digits as you progress
3. Memorize the number within 5 seconds
4. Enter the number after time's up
5. Green for correct, red for incorrect answers
6. Level 1: 5 points, Level 2: 10 points, up to Level 20: 100 points
7. Total possible score: 1050 points, Excellence: 840+ points