Not too hard to figure out – Brainbean - Brain Games for Kids Review

Yes, it doesn't include instructions but it isn't that hard to figure out. Don't overthink it, it's not as tricky as it may appear at first. It is instinctual so the appropriate user could really be determined not by physical age so much as mental creativity. Think patterns, spelling, logical sequences, matches and "what doesn't belong".
Review by Christina@Milolii on Brainbean - Brain Games for Kids.