Game Weighting Percentages
Games contribute differently to your pending wagering requirement, and their respective contributions are specified by so-called game weighting percentages.
If a game is 100% weighted, an amount equivalent to your bet is subtracted from your wgering requirements with each spin. If you bet $1, your wagering requirement decreases by $1.
If a game is only 10% weighted, only a tiny portion of your bet will affect the wagering requirement. If you bet $1, your wagering requirement only decreases by $0.10. Consequently, you have to bet ten times more to wager your bonus than if you played a fully-weighted game.
Slots are typically 100% weighted, while table games and live casino games have game weighting percentages between 0% and 20%.