The game is aimed at kids from 3-5 years of age and develops logical reasoning, which is the ability to recognize and classify the important properties of objects.

Each round there are 4 objects presented on the screen, of which, 3 have something in common - thus uniting them into a category. Such a category always has a name (for example: furniture, toys, fruits…). The fourth object doesn't belong to that category and thus is "not like the others". For example, the following objects may be presented: a spoon, a cooking pot, an apple, and a fork. Three objects (the spoon, the cooking pot, and the fork) together are in the category of "dishes". The apple is a fruit and does not belong to the category of dishes. The task of the child is to choose the object that is not like the others.

The author, Dr. Irina Marina, is a child neuropsychologist with more than 10 years of experience and a PhD in neurobiology. Her games are based on the materials she uses in her practice with kids.

Categories of objects in the game include toys, dishes, tools, clothes, school supplies, flowers, mushrooms, fruits, vegetables, sweets, mammals, birds, insects, and marine creatures.

The game systematizes the child's knowledge about the world, and improves the ability to abstract and solidify concepts.

The Lite version includes only 20 tasks. The full version includes more than 200 tasks.