This is to reproduce a model in the direction of reading.
This game works the visuospatial training to facilitate programming praxis eye scan linked to the movement
Easy level: it involves a type of activity "copy" alternating left (model) to right (answer grid) along the axis of reading.
Average level: it stimulates the working memory to keep short-term memory a number of boxes to fill and thus reproduce the proposed item.
Difficult level: while working on visual-spatial displacement, it requires attention and finer observation to deduct and set a more economical strategy cognitively.