Slitherlink
| Min number of participants | 1 |
| Age | 8+ yrs. |
| Safety support by adult | Not required |
| Min duration | 15 min. |
| Cost | Low |
| Environment | Indoor / Outdoor |
A logic puzzle where you draw a single unbroken, non-crossing loop connecting dots on a grid, so the number of loop edges surrounding each numbered cell exactly matches that cell's printed number.