This software is a green, no-installation-required application. After decompressing, simply run the exe file within the compressed folder to use it. This system provides a full simulation of the lottery drawing process, with numbers generated having a certain degree of randomness. The types of lotteries that can be simulated include: Double Color Ball, China Welfare Lottery 35-out-of-7, China Welfare Lottery 22-out-of-5, China Welfare Lottery 3D, Sports Lottery 36-out-of-7, Sports Lottery 29-out-of-7, Sports Lottery 22-out-of-5, Sports Lottery Pick 3, Pick 5, and Lucky 7 Stars, etc...