777 Diamonds Slot Review

Expert rating
Return to player
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Key game features

Reels 5
Jackpot amount N/A
Paylines 25
Max. wager $25
Payout % 94%
Bonus round No
Software MrSlotty
Max. payout 2,000x
Theme Jewels and gemstones
Jackpot type (normal/progressive) N/A

777 Diamonds slot game overview

The 777 Diamonds slot game from MrSlotty is an elegant affair with dazzling symbols on the reels, plus a blanket of gemstones glittering underneath the diamond-framed 5x3 reel set. A classical piece of music plays in the background while arcade-style sound effects are heard when spinning the reels.

Our 777 Diamonds slot review explores the gameplay and bonus features. We also recommend the best online casinos and share the potential payouts, so you can make an informed decision before spinning for real money.

Slots Classic

Substituting Wilds

777 diamond-encrusted wilds substitute for all other paying symbols

Free spins deposit bonus

Free Spins

Land three or more scatters to trigger up to 10 free spins


High Paying Wild

Land five wilds on the reels to win 2,000x the bet per line


Flexible Paylines

Adjust the paylines to suit your budget, play with 1 to 25 paylines

Pros and cons


  • Free spins bonus
  • Mini gamble game
  • Medium volatility
  • Popular theme


  • Low RTP rate
  • No bonus round
  • Slightly complex betting options

Top 5 reasons why we rated 777 Diamonds: Good

  • 1
    High paying wilds
  • 2
    Free spins bonus
  • 3
    Mini gamble game
  • 4
    Adjustable paylines
  • 5
    Excellent graphics

Review of 777 Diamonds key features

How to play 777 Diamonds

We found the 777 Diamonds online slot to be reminiscent of an old-school classic with 70’s style graphics and a rather plain backdrop. All the symbols are made out of gemstones, with premium payouts awarded by a black diamond of up to 1,000x your bet. Other symbols include a pair of cherries, a four-leaf clover, a gold bell, a trio of diamonds, a pair of gold jewels, and a diamond-encrusted number seven. 

A triple BAR represents the scatters, while a trio of diamond-encrusted lucky 7s acts as wilds. MrSlotty’s slightly over-complicated betting options confused us initially, but we soon got the gist. All wins are multiplied by the coin value bet per line; 1 coin = $0.01, and values range from 1 to 100. 777 Diamonds slot has 25 adjustable paylines and a lower-than-average 94% RTP rate. 

777 Diamonds jackpots and bonuses

The 777 Diamonds wilds substitute for all other symbols except the scatters and reward an instant payout of 2,000x when you land five across the reels. Triple BAR scatters trigger the 777 Diamonds free spins; land 3, 4, or 5 scatters to receive 1, 3, or 10 free spins, respectively. 

Every winning spin offers you the chance to gamble with your current win amount. Guess the next card's color to double your win, and guess the suit to quadruple your win. But guess wrong, and you lose your current win amount. 

777 Diamonds mobile options

We have evaluated the 777 Diamonds mobile game and can reassure you that it is fully optimized to play from your smartphone or tablet device. The gameplay is smooth and sounds and visuals are clean. It is compatible with both iOS and Android devices. Check our list of recommended casinos for instant play through your web browser or to see whether you need to download a handy mobile app.


Let’s be clear, the 777 Diamonds slot is an easy-to-play game. It’s entertaining, has a popular theme, and offers a free spins bonus, a mini-gamble game, and low-stakes play. You can enjoy playing whilst on the move and it sports a retro vibe. However, the RTP rate is lower than average, and the betting options are a little convoluted. We would be more than happy to recommend this as a beginner’s slot for its low stakes and over-simplistic gameplay.


Where can I play 777 Diamonds for free?

777 Diamonds is available to play for free at many of the best casinos stocking MrSlotty slots.

How can I get free spins in 777 Diamonds?

Just draw 3, 4, or 5 triple BAR scatters to trigger 1, 3, or 10 free spins, respectively.

How can I win 777 Diamonds?

Match three or more symbols across the active paylines to get a win. Land substituting wilds to create additional winning combinations.

Is there a bonus round in 777 Diamonds?

No. There is only the free spins bonus round and the mini-gamble game available.

Is 777 Diamonds a good slot game?

Yes. We have rated it as a good game as it offers free spins, a retro vibe, a popular theme, and low stakes that will suit beginners.

What is 777 Diamonds’ RTP?

The game’s RTP is 94%, which is slightly below par. The average rate is usually around the 96.00% mark.

Does 777 Diamonds offer the chance of winning a jackpot?

No. You won’t find a jackpot prize, but you will find high-paying wilds with a 2,000x payout for landing five on the reels.

Can I play 777 Diamonds on my mobile phone?

Yes. The game is compatible with all popular devices, including Apple and Android.