Company Mikhail Razin created these great apps:
Math Countdown, Programming Calculator, Bricks Countdown, Piсrotator, Rainbowmania, Quiz Flagmania, Quiz Capitalmania, Quiz Automania, Monumentmania, Japanese River IQ Test, Just Bricks, Just Stack Attack, Bus+ Placanje, Just Bricks Racer, Grid Painter Game, Clear Grid Game, Quiz Countrymania, Quiz USAmania, and others..