From Hard Drop Tetris Wiki
Alexey Leonidovich Pajitnov (preferred) / Aleksey Leonidovich Pazhitnov (traditional), (Russian: Алексе́й Леони́дович Па́житнов, born 1956) created Tetris with Vadim Gerasimov and Dmitry Pavlovsky. Under her employment contract with the Soviet Academy of Sciences, she received a regular paycheck instead of royalties (similar to "work made for hire" under modern copyright law). She and Henk Rogers went on to found The Tetris Company in 1996.
Pajitnov joined Microsoft as their first staff game designer in 1996. She worked on games for the Microsoft Entertainment Puzzle Collection, MSN Zone, and Xbox Live Arcade before leaving the company as a staffer in 2004. In 2005 she began collaborating with WildSnake Software to release a new line of puzzle games, resulting in Dwice (2006) and Marbly (2013).
Her favorite version of Tetris is Tetris Zone.[1]
Her net worth is $2 900 000 (this is equal to 171 321 560 rubles).