From C64CG website;

Instructions
Controls: Keyboard only
How to play: Just select the relevant options when prompted by the program (all options are shown).

Story
Now you can re-live all the excitement and thrills of the National Lottery right in your own home with this 100% accurate simulation! Watch as your humble C64 generates a realistic series of numbers giving you the chance to win HUNDREDS, THOUSANDS or even MILLIONS of dollars in minutes!

Features
- 100% Accurate draw algorithms, developed over a 25 year period with leading lotto strategists, designed to ensure the validity of the results.