If I may, I'll help you out a bit. Sticky bonuses usually consist of bonus money - allowing you to extend your pool.
Allow me to quote from a free course focused on bonuses:
(https://casino.guru/academy/course/online-casinos-bonuses)
"Sticky bonuses are common in some countries and virtually unknown in others. The only recommendation we have here is to make sure players know how a bonus works before they use it. If a casino is offering sticky bonuses in markets when they are not common, we would like to see these specifics prominently displayed and explained.
Deposit lock
This rule has to do with how bonus funds and real money are treated and has to do mainly with deposit bonuses. Let’s imagine a player who has deposited $100 and gotten a $100 deposit bonus. The casino can handle this situation in two different ways:
Deposit locked
The deposit bonus and deposited money are put into the same ‘basket’ and treated as bonus funds. This means the player has $200 of bonus funds in their account, which cannot be separated.
Deposit unlocked
The deposit bonus and deposited money are treated separately. In this case, the player has $100 of real money and $100 of bonus money in their account. Real money is usually used for bets first, and if the player runs out of it, they start wagering bonus money. This may allow the player, for example, to forfeit the bonus money and only keep playing with the real-money part before fulfilling the wagering requirements.
Our views and recommendations
We think that bonuses with the deposit unlocked are better for players, as they allow them to play without the strict restrictions of bonus-money play at first . These usually apply only when wagering bonus money. That said, both approaches are good in general, as long as everything is made clear to the player and there are no other rules that can be considered unfair."
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