Russian and American computer engineer and video game designer. He is best known for creating, designing, and developing Tetris in 1985 while working at the Dorodnitsyn Computing Centre under the Academy of Sciences of the Soviet Union . Following the dissolution of the Soviet Union in 1991, Pajitnov moved to the United States and became a U.S. citizen. In 1996, he founded The Tetris Company alongside Dutch video game designer Henk Rogers. Despite the game's high popularity, Alexey did not receive royalties from Tetris prior to this time.