TSpin

This is a puzzle casual game, which can develop the brain and improve the third degree of vision at the same time.
Some have found that gaming can help prevent post-traumatic stress disorder and prevent amblyopia in children.
All falling squares are composed of four pieces. Because of the mathematical and dynamic nature of this game, it is often used as a practice theme for game programming. A great feature of this game is that it cannot be played in any physical form, only in a flat form.