Online casino versions of keno are much simpler. You simply point and click on a web template to choose the numbers that you want. In this case, you will also probably be betting with tokens that are cashed in at the end of a run of keno games, rather than cashing in after each game. The numbers are also not dropped into a drum and rotated as is common in a live casino, but rather selected by a piece of software called a random number generator.