Software Developed by Rionnag Software
TetColor+
Tetcolor+ is a tetris-like game with some additional features
RionaCalc
RionaCalc is a smal and powerful calculator that can convert units of measurement, find root, minimum, maximum of the function, calculate value of define integral, calculate mathematical expressions. It supports complex numbers, common fractions, time,
Catventure
it is a logic game. The aim of it is to help to a hero to walk through 55 levels and solve all puzzles