The HEAD Game: High-Efficiency Analytic Decision Making and the Art of Solving Complex Problems Quickly
| Country | USA |
| Brand | Knock Knock |
| Manufacturer | Knock Knock |
| Binding | Unknown Binding |
| ItemPartNumber | 50260 |
| Model | 50260 |
| Warranty | Manufacturer defect |
| Color | Grey/Grandpa |
| ReleaseDate | 2018-01-09 |
| Size | 4.5 x 3.25-inches |
| UnitCount | 1 |
| UPCs | 825703502602 |
| EANs | 0825703502602 |