Tetris is a popular puzzle video game originally designed and programmed by Alexey Pajitnov in 1984. The game features a grid-based gameplay where players must arrange falling tetrominoes to create complete horizontal lines. With simple yet addictive gameplay, Tetris has become one of the most iconic and enduring video games of all time. It has been ported to numerous platforms and has inspired countless clones and spinoffs. Tetris's appeal lies in its easy-to-learn mechanics and challenging gameplay, making it enjoyable for players of all ages.