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

Casinos do not treat all of their games equally when it comes to clearing these massive bonus requirements.
Why Casinos Want You to Play Slots
In almost every single online casino, standard video slot machines contribute exactly 100% toward your wagering requirements.

Because the mathematical edge favors the house so heavily, the casino is confident they will slowly drain your balance.
Always read the "restricted games list" before spinning with bonus fundsClassic 3-reel slots sometimes have a lower contribution rate than modern video slotsProgressive jackpot slots are almost universally excluded from bonus play entirely Table Games: The Brutal Contribution Penalty
It is incredibly common for Blackjack or Roulette to contribute a miserable 5% or 10% toward the total requirement.

Many modern online casinos take this a step further and simply reduce the table game contribution rate to absolute zero.
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.

Knowledge of these hidden percentages is the ultimate key to transforming a seemingly impossible bonus into withdrawable cash.
Wager AmountContribution RateAmount Deducted from Goal$20 on Slots100%$20.00$20 on Baccarat10%$2.00
Never assume a game counts; always check the specific terms and conditions table before placing your first bonus wager.