Secret Code Cracking
| Min number of participants | 1 |
| Age | 8+ yrs. |
| Safety support by adult | Not required |
| Min duration | 20 min. |
| Cost | None (Free) |
| Environment | Indoor |
Invent secret codes and ciphers, then challenge yourself or a friend to crack messages hidden inside numbers, symbols, or swapped letters — a brain-teasing activity that mixes creativity with logical thinking.