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• My SUDOKU 1.62, The Game From Endless Time — In 1849, prominent mathematician Leonard Euler published his work «De quadratis magicis» («On magic squares»), describing properties and construction of «squares of digits» with special constraints for sum by rows and columns. In 1979, American architect Howard Garns published in Dell Magazines a puzzle called «Number Place». In 1986, Japanese puzzle publisher Nikoli republished Garns’ puzzle…
• Valgetal - tons of fun for real number-crunchers! — First released in 1985, Tetris has been cloned and modified a countless number of times. Today, it is available on virtually every gaming platform ever released in hundreds of variations and can well be called the most popular game of all times. Although Tetris is a game, entertainment is not its primary purpose. Tetris improves your reaction and teaches you to make quick decisions based on the current situation, which…