The game was designed to help him improve his visual perception skills and problem solving abilities, whilst reducing his urge to tap randomly.
Stenciletto is a shapes game based on an IQ test for children created a century ago - reimagined as a fun game.
You need to really study the shapes, rather than just quickly glancing: most mistakes are due to poor visual perception rather than incorrect logical reasoning.
The game works like this: solid and cut-out shapes (stencils) are placed one on top of another to make a pattern.
As the timer doesn't start until you tap a shape, you can take as long as you need to study the the shapes, think, and plan your answer.