| User | Rating | Min. Age | Adults Too | Comment |
| Mark | 7 | | | A fairly difficult game, even for adults. |
| RPardoe | 7 | 8 | Yes | My 8 year old daughter loves this game. Her strategy is to build efficiently rather than focus on building connections between machines. But it can be a bit frustrating as it requires a bit of planning and spatial visualization skills. First game might want to be played semi-cooperatitvely to help teach. |
| guantanamo | 6 | 12 | Yes | |
| ed95005 | 5 | 12 | Yes | Competitive puzzle game. If your kids enjoy complex puzzles, this may be worth considering, but I suspect most kids will find this boring. |