- Tetris is a puzzle video game invented by Alexey Pajitnov in 1985 where different shapes made of four squares fall from the top of the screen and the player arranges them horizontally or vertically without leaving gaps. - When a solid line is formed, it disappears and the blocks above fall to fill the space. The game gets faster as it progresses, making it more difficult to avoid filling up the screen. - Tetris originated in Russia and became popular worldwide on many platforms like computers, consoles, phones and more. It led to legal battles around ownership rights and versions on different systems like Game Boy and Nintendo.

2. SUMMARY OF THE GAME The name "Tetris" is derived from the Greek numerical prefix "Tetra-," meaning "of four" or "having four." This is because all of the pieces used in Tetris are made up of four segments arranged in different shapes. Tetris is a computer puzzle game in which various shapes each made of four squares are falling down a well. The user turns the pieces around and moves them left or right in order to arrange them on top of the other. When a solid line of squares is made from edge to edge, the line dissolves and all the pieces move down by one square. When the lines dissolve points are won, when the well fills up the game ends. Players work hard to keep the well as empty as possible, but as the game progresses the pieces fall faster and faster making that harder.