Every bonus T&C will state the game contribution of games to the bonus wagering requirements. Let’s say, the T&C mentions that slots contribute 100%, while table games will contribute only 50%. This means that with a 20 EUR deposit for a 100% cash match under 20xBD, 800 EUR is a sum that should be rolled over on slots. But if you decide to opt-in for table games, you will need to roll over 1,600 EUR, which is an unnecessary complication.