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 Why Blackjack Barely Contributes
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.
Protecting Your Bonus Funds
Within this dense legal document, there will always be a detailed table explicitly outlining the exact contribution percentage for every game.

If you exclusively play live dealer roulette, accepting a bonus where roulette contributes 0% is a massive, incredibly frustrating mistake.
Game TypeWhy the Rate is Low/ZeroVideo PokerRTP can exceed 99.5% with perfect strategyLive Dealer GamesHigh overhead costs for the casino to operate
Wagering contributions are the casino’s mathematical safety net, carefully designed to protect them from skilled table game players.