When you eagerly claim a massive casino bonus, the required playthrough or wagering requirement is usually heavily advertised.

Because different games have vastly different house edges, the casino assigns a specific "contribution percentage" to each game category.
Slot Machines: The 100% Contribution Standard
In almost every single online casino, standard video slot machines contribute exactly 100% toward your wagering requirements.

By offering a 100% contribution rate, they actively push bonus users away from the more player-friendly table games.
Video slots are the absolute fastest way to clear any standard casino bonusA $5 bet on a 100% contributing game removes $5 from the requirementCasinos prefer slot players because the games rely entirely on pure chance Table Games: The Brutal Contribution Penalty
If you prefer table games like Blackjack, Baccarat, or Video Poker, clearing a bonus becomes an agonizingly slow grind.

If Blackjack contributes 10%, a $10.00 wager only removes a tiny $1.00 from your remaining playthrough total.
Where to Find the Contribution Table
Before you ever deposit money to claim an offer, you must relentlessly hunt down the casino's specific bonus Terms and Conditions.

Furthermore, if you accidentally play a restricted 0% game with active bonus funds, the casino may confiscate your entire balance.
Wager AmountContribution RateAmount Deducted from Goal$20 on Slots100%$20.00$20 on Baccarat10%$2.00
If you want to clear a bonus quickly and efficiently, you must temporarily embrace the high volatility of the slot machines.