| User | Rating | Min. Age | Adults Too | Comment |
| ef | 10 | 12 | Yes | |
| BaSL | 8 | 12 | Yes | Not for all, maybe too abstract. |
| peacmyer | 8 | 10 | Yes | Great game for teaching math skills, spatial awareness, and management of limited resources. |
| Mark | 7 | 12 | Yes | Great game for adults but teens may find the abstract theme dry. Requires thinking and concentration. |
| Shade_Jon | 7 | 12 | Yes | Only the mathematical types will like this game of abstract castle building. The rules are too rigid for it to really be fun, but planning well is rewarded. |
| Thommy8 | 6 | 12 | Some | |
| The Unbeliever | 5 | 13 | Some | Dry. Too many options for kids to think about. |