Slots DoubleDown Fort Knox 17+

Spin Vegas Casino Slot Games‪!‬

Double Down Interactive LLC

    • Free
    • Offers In-App Purchases



Win HUGE JACKPOTS in real Vegas slot machines with Fort Knox Slots! Spin exciting casino slots, bank epic wins, and collect scratch tickets for instant rewards. Win massive bonuses of free credits every day with the Daily Wheel spin, and play for thrilling rewards with ALL-NEW Bingo Challenges! NEW slot machine games added regularly, including Vegas favorites like Wheel of Fortune® Double Diamond, Cleopatra, & more. Spin 777 casino slot games you know & love from DoubleDown Classic Slots. Free slot machines, Big Wins, and amazing jackpots are waiting!

Download now to get a 200,000 credit new player bonus.

• Play for the famous Fort Knox Jackpot, just like at the casino!
• Play top Vegas casino hits such as Lucky Larry’s Lobstermania 3, Cleopatra, Wheel of Fortune® slots, and more!
• Instant free credits on download
• Daily Bingo Challenges provide fun new ways to WIN every day
• Boosts enhance your game by more than doubling bonus rounds, awarding extra Mystery Multipliers, and more!
• Scratch tickets for instant bonus rewards
• Frequent bonuses to keep the action hot!
• Now includes your favorite 3- and 5-reel Vegas slot machine games from DoubleDown Classic Slots!

DoubleDown Fort Knox has the hottest slot machines, the biggest winning features, and the authentic Las Vegas experience like you’ve never seen it before in any mobile casino games app! You’ll hit epic wins with King Reels, Nudging Wilds, Free Games, and more!

And don’t forget about the JACKPOT! From the iconic Vegas Fort Knox feature to progressive jackpots, you’ll have your pick of glittering wins.

Sign up for our Lucky Cat subscription program to unlock the Kitty Bank feature:

► The Kitty Bank steadily fills up with free credits, even when you’re away from the game
► It fills up even faster while you’re spinning
► Break the Kitty Bank every 6 hours to collect your saved-up credits!

Lucky Cat subscribers have Early Access to new slots!

Subscriptions will automatically renew monthly unless canceled within 24-hours before the end of the current period. You can cancel anytime with your account settings. Any unused portion of a free trial will be forfeited if you purchase a subscription.

For more information, see our Terms of Service and Privacy Policy. Need more info? Check our FAQ at

Start playing for jackpots now with 200,000 credits, and collect frequent bonuses as you play online casino slots free in the hottest mobile slot app!

DoubleDown Fort Knox is the latest Vegas 777 slot machine game from DoubleDown Interactive, makers of Ellen's Road to Riches Slots, DoubleDown Classic Slots, and DoubleDown Casino. For more slot machine games as well as Video Poker, Blackjack, and Roulette, play DoubleDown Casino!

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DoubleDown Fort Knox is intended for players 21 yrs+ and does not offer “real money gambling” or an opportunity to win real money or prizes based on the outcome of play. Playing DoubleDown Fort Knox does not imply future success at “real money gambling.”

What’s New

Version 1.32.19

Are you ready for new slots? This update brings some back-end work to prepare for upcoming slots, as well as some bug fixes and performance improvements!

Ratings and Reviews

4.6 out of 5
135.5K Ratings

135.5K Ratings

fuwlmrt ,

Lost bonuses

While playing Lobstermania3 I got the buoy bonus. Before the bonus started your app froze. I gave her several minutes to see if it would change and it did not so I logged out and log back in. I went back into the game and it gave me the option to recover my bonus. It had me spin again and it gave me the boy bonus as well as a wheel bonus. I was able to play the wheel bonus and got two extra spins and ended winning five. 4 million. However as the game went to play the buoy bonus it froze again. I repeated the same steps left out, logged back in, and when I went back into the room I was not given the option to recover my bonus. I was also not paid the 5.4 million that I won on the wheel bonus. I do have screenshots of this as well. Is there any way for me to get to play the bonus I won or receive the payout for the bonus I was able to play?

Bobby b49 ,

Nice casino

Nice casino as far as online casinos go.....BUT....they need to rethink the cost of purchasing credits. To spend $99 for just 100,000,000 credits is very excessive. $100,000,000 credits lasts no time in these casino games. Plus you very seldom experience any real big wins. Many other casinos have very generous offers, so I chose to support them. For $24 on another very realistic casino(with games you see in real casinos) I have purchased over $3,000,000,000 credits. Enough to play and be entertained for a long time. It’s really a shame that Double Down Ft. Knox is pinching pennies, when with generous offers and more generous wins they could be enticing more players to purchase more credits. After all this is not a REAL casino where you have the chance to win REAL the developers do not need to apply REAL casino odds to their games. Be generous with credits and wins and they will be rewarded with generous purchases. Win win for all parties involved.

Developer Response ,


Thanks for reaching out with your feedback on our game! User feedback is important to us in crafting a fun and entertaining gaming experience for all, and we greatly appreciate you taking the time to tell us about your experiences. Thanks, and good luck in the casino!!

Chlorinequeen82 ,

Visually beautiful but bonuses are impossible.

This game is beautiful but this app gets pretty boring unless you play Golden Egypt. That seems to be the only game where bonuses hit and the wild options actually give you a chance to go up in your chip count. This is the only game that has actually entertained me and seems to play fairly.

Siberian Storm’s animation is way too long/slow and the “Slam button” option on anything almost guarantees no return on your bet- it’s incredibly boring between the slow speed, lack of hits, and drought in bonuses.

You can literally play games for over an hour with no bonuses triggered in Fort Knox. I bet I’ve put in 6 cumulative hours of play into King of Macedonia and triggered the bonus a grand total... of once. The progressives are a joke, no matter what you do, you’ll only hit the bronze and OCCASIONALLY the silver.

That being said, the Lucky Cat bonus and multiplier bonus chips at varying levels is a welcome feature.

Fort Knox has a lot of potential but the games play WAY too tight for something that doesn’t involve actual money. All of the King Reels games are beautiful to look at but horrible (Turquoise Princess, Dark and Stormy, and Farmers Daughter) and not even worth playing between low return, even on regular spins.

Developer Response ,

Hi there! We appreciate your taking the time to provide a thorough review on your experience playing our games. I am sorry for any frustration you may have experienced. Our goal is to provide our players the very best gaming experience out there. While we cannot adjust the odds of winning on any particular slot game, we have been hard at work on improving the overall experience with the introduction of many updated features!

App Privacy

The developer, Double Down Interactive LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Contact Info
  • Identifiers

Data Linked to You

The following data may be collected and linked to your identity:

  • Purchases
  • Contact Info
  • User Content
  • Identifiers
  • Usage Data
  • Diagnostics
  • Other Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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