As a way of enabling many of their players to learn playing tips as well as winning strategy before they part with their hard-earned cash in the form of wagers and bets, most software developers do release their games in the demo/practice mode. This, of course, is in addition to the real money mode where players must wager their own cash to start playing casino games.
For those players, therefore, who are just looking to try gambling titles without depositing any real money, they can simply opt to play in the demo mode to have some practice, get acquainted with the rules or build a strategy.
Free credits which enable punters to play in the demo mode are provided by the software developer behind the game, and most of the times their number will be in excess of around 1000 (depending on a title and provider) meaning they are enough in allowing a gamer to play without real cash investing for a very long time.