How many digits can the human brain process at a time? This mini game is based on a short-term memory research by Nelson Cowan.
Choose the number of digits, press start. Memorize the original digits carefully. When the bulbs start to appear, recall the incremented digits one by one (e.g., 4 → 5, 9 → 0) in the correct order!
Example:
57 (2-digit option) -> recall '6' then '8' respectively as each bulb appears.
829 (3-digit option) -> recall '9' then '3' then '0' respectively.