Mystery Bonus Weekend Returns to Harrah’s


How this second weekend in March can be the start of Daylight Savings Time when the weather outside still screams winter is a mystery to me. It also might be an enigma none of us can unravel. So I think your time would be much better spent tackling a mystery you can solve. How big will your guaranteed Mystery Bonus at Harrah’s Online Casino be this time?

If you’re a long time player, you will probably recognize this offer instantly. How could you not when every couple of months Harrah’s keeps bringing it back? Don’t worry, every aspect of the promotion is exactly the same as before. After all, it ain’t broke, why fix it? Nothing about Harrah’s Mystery Bonus needs fixing. It’s one of this casino’s most popular promotions.

What Makes This Offer a Mystery

As nice as it is to know ahead of time exactly what your bonus will be if you deposit or wager a certain amount of money, it’s not as much fun as when the size of your reward is a mystery. Prize drawings have a built-in mystery element, too, but much more often than not, the outcome is not to your liking. Since there can only be a few winners at most, the most likely outcome by far is that you win nothing. But Harrah’s Mystery Bonus is nothing like that because everybody wins!

As long as you make a minimal qualifying deposit and claim the offer as indicated below, a bonus is guaranteed! In other words, the mystery is not whether you will get a bonus, but how much it will be.

The bonus comes in three possible sizes: $10, $25, or $50.

How to Claim Your Guaranteed Mystery Bonus at Harrah’s Online Casino

If you’ have an account at Harrah’s Online Casino and have a little time between now and Sunday to play your favorite online games,  this Mystery Bonus has your name written all over it. The promotion runs from Thursday, March 7 through Sunday March 10.

Here’s what you need to do to participate:

  • Log into your anytime during the March 7-10 promotion period.
  • Make a qualifying deposit, as specified in the marketing collateral, using the code MYSTERY.

As soon as your deposit is accepted, Harrah’s will reveal your bonus. $10, $25, or $50 will be credited to your account instantly.

Keep in mind that all bonuses are randomly determined. When during the four-day promotion period you claim the offer will have no bearing on the size of your bonus. The size of your deposit and previous level of play also have no bearing on the size of your bonus.

You can only claim this offer once and with a single deposit, so pick whichever day during the promotion period you find most convenient. If you wish to deposit more than the specified minimum, that is prerogative. However, it’s unnecessary and inadvisable unless you need the additional money for wagering purposes. As always, deposits made at the Caesars Atlantic City casino cashier’s cage or via PayNearMe don’t count.

Wagering Requirements for the Mystery Bonus

The Mystery Bonus is subject to the same wagering requirements and other terms and conditions as other bonuses. You can clear the bonus with any game of your choosing. However, only slots count 100%. Therefore, if you select any other type of game, the amount you have to wager will increase substantially. Here are the wagering requirements for the various games:

  • Slots: 5x bonus
  • Roulette: 25x bonus
  • Video Poker or Blackjack: 50x bonus

You have up to seven days to complete the wagering. While the bonus playthrough is still in progress, not only the bonus itself, but also the deposit tied to the bonus, and any further winnings related to the bonus, will remain temporarily locked into your account. However, as soon as the bonus is fully cleared (assuming it has not yet expired), all of this money (or whatever is left of it) will become available for you to withdraw.

Canceling the bonus, attempting to withdraw unavailable funds prematurely, or failure to complete the wagering on time will result in forfeiture of both the bonus and any resulting winnings.

Your Best Bet: Stick to Slots

There are other online casino games you can play that have a lower house edge than slots. However, you face a steep price for choosing those games to clear the bonus in the form of much heftier wagering requirements. For that reason, I think clearing the bonus with slots is your best option. If you make an effort to play only the very best sots (those with a return to player or RTP of 96% or better) you stand the best chance of coming out ahead or at worst keeping most of your starting bankroll intact.

You will only have to wager the bonus 5x. That translates to $50 for a $10 bonus, $125 for a $25 bonus, or $250 for a $50 bonus. And don’t forget–you have a full week, if you need it, to complete these wagers.

What Makes Harrah’s Guaranteed Mystery Bonus a Winner

If you’re a high roller, you might not be enamored by the small sizes of these bonuses. You could wind up with a token bonus of only $10, while even the maximum bonus of $50 would not seem like a lot if your average bet size is much greater.

However, most players will appreciate the gesture and view this Mystery Bonus as a great opportunity to get something extra from the casino without incurring a big expense themselves. Even a small bonus is better than no bonus, especially when it’s guaranteed and as affordable as this one is.

Here are some other great features to consider:

  • Very reasonable deposit and wagering requirements

In the past, the minimum deposit was only $25, and the wagering requirements, at least for slots, are extremely reasonable, too. Typically, even with slot play, you face a wagering requirement of 10x the bonus or higher. Yet for this Harrah’s bonus, you only have to wager the bonus 5x. Some NJ online casino bonus offers could have you worried they might break the bank, but this is not one of them.

  • Great bang for your buck

On a $25 deposit, even a $10 bonus gives you a return on your deposit of 40%. A $25 bonus would give you a return of 100%, and a $50 bonus, a return of 200%!

  • The assurance of a guaranteed bonus combined with the added intrigue of a mystery bonus

Not getting a bonus as often as you feel you deserve is bound to leave you frustrated. But now you have the perfect remedy–a bonus that you can be absolutely positive you will get because it’s guaranteed. But what you don’t know is for how much. That’s the mystery feature that makes the fun and excitement of this offer off the chart.

It is no wonder that Harrah’s Mystery Bonus is a player favorite.








Barbara Nathan
Barbara Nathan is both a professional writer and casino, poker, and sports betting expert. Originally from NYC, she relocated to Absecon, NJ in 2013 just prior to the official launch of New Jersey regulated online casino and poker gambling. Besides keeping tabs on important developments in the industry from day 1, Barbara is very familiar with what each NJ online casino has to offer. Her comprehensive, unbiased reviews and promotion descriptions provide a valuable service to NJ online casino players. Barbara also enjoys volunteering in the Atlantic City community. She is a certified literacy tutor at the Atlantic City Public Library.

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