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

Failing to understand these hidden percentages is the number one reason players accidentally void their bonuses or fail to cash out.
The Safest Bet for Clearing Bonuses
In almost every single online casino, standard video slot machines contribute exactly 100% toward your wagering requirements.

However, players must carefully check the terms, as some specific high-RTP slots (like Blood Suckers) are often explicitly excluded.
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
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
You must study this table carefully to ensure your favorite games are actually eligible for bonus play.

Furthermore, if you accidentally play a restricted 0% game with active bonus funds, the casino may confiscate your entire balance.
Game CategoryTypical Contribution %Speed of ClearingVideo Slots100%Very FastBlackjack5% - 10%Agonizingly Slow
Wagering contributions are the casino's mathematical safety net, carefully designed to protect them from skilled table game players.