Private Lottery Machine is an application that uses machine simulation to draw the winning numbers for a lottery.  You can actually make your own draw. Besides the simple design, this random number generator is useful because of its physics engine.

It is the first lottery-specific random number generator based on physical emulation. On a tablet or smartphone, sketch something of your own, and you'll get all random numbers. You may shake the balls by shaking your cellphone or tapping the screen with your finger. The majority of well-known lotteries can now use your custom lottery rules that you write. Try it now!