Very nice game that I wanted to have since I was little. We bought it for my son when he was about 8 years old (he has been playing board games since he was young), but he couldn't make the right thoughts to find the code and found it boring. Now that he is almost 9, we tried it again and he could make logical thoughts to find the code. However, we played with 3 people and I think it was more interesting because there was dialogue in the thoughts that each player made before entering their combination. I would say not to try it for children under 8 years old unless they have very well-organized thoughts, and I would suggest playing it with 3 people so that the child finds it more interesting (for older people who have learned to wait and not get bored, there won't be a problem).
Now regarding this specific version, the biggest problem I would say is the device where you enter the code (that's why I gave it 4 stars instead of 5). First, it is not very stable and if you are not careful, the combination can change, and second, some colors are not very clear, making it difficult to distinguish them. We ended up writing the code on paper with markers. I would definitely recommend it as a game, but I am not sure if this version is the best.