Alexey Pajitnov As a child, he was a fan of puzzles and played with pentomino toys. In creating "Tetris," he drew inspiration from these toys. Pajitnov created "Tetris" with the help of Dmitry Pavlovsky and Vadim Gerasimov in 1984. The game, first available in the Soviet Union, appeared in the West in 1986. Pajitnov also created a sequel to "Tetris", entitled "Welltris", which has the same principle but in a three dimensional environment where the player sees the playing area from above. "Tetris" was licensed and managed by Soviet company ELORG, which had a monopoly on the import and export of computer
Corporate anniversary an anniversary to express gratitude for past success. Generally, larger corporations have the means to stage more elaborate celebrations. An anniversary can advertise a firm's staying power and longevity. A report in the "New York Times" explained the marketing logic: Marketers choose variables relating to anniversaries to meet specific promotional objectives. While the length of time celebrated by an anniversary is often divisible by five, such as the 10th, 15th, 25th, 50th, or 80th anniversary, there are no hard and fast rules. For example, Google celebrated its 13th anniversary with a special "doodle" for its main search page which showed