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Gem Machine Slot Online from Bally

Slot details

Jackpot Game
Release Date
Slot lines
Scatter Symbol
Slot reels
Max. win
Wild symbol
Min. bet
Free spins
Symbol Stacked
Casino slot types
Slot Theme
Max. bet
Bonus game

Where to Play Gem Machine

#AD New customers only. 18+

  • A minimum deposit of £10 is required
  • The minimum withdrawal from your cash funds is £10
  • The wager is 35x the value of: your original cash deposit + the bonus funds
  • Max bet £5
  • Any unused bonus funds will be removed from your account after 30 days
  • All Free Spins are valid for 10 days

#AD New customers only. 18+

  • Max Bonus Bet £5
  • Min. deposit is £20
  • Get 3 Bonus spins for every £1 deposited up to 165 spins for each of your first 5 deposits
  • All spins are on Book of Dead only
  • Bonus funds must be used within 30 days
  • Bonus spins must be used within 10 days
  • Bonus funds are subject to 35x wagering and withdrawal requirements

#AD New customers only. 18+

  • Min. Deposit £20
  • Winnings from Free Spins are subject to a maximum win amount of £8 per 10 free spins
  • Wagering requirement is 65 x bonus won + any remaining wagering requirement
  • 500 free spins are credited as 10 sets of 50 spins

Gem Machine

The Gem Machine video slot by Bally brings a unique design that merges steampunk and gemstones on all devices. When you open the game, you first select the number of reels you’ll play on, from 1 to 5. The more you use, the higher the RTP goes, with 5 sitting at a comfortable 97%.

Whenever you spin, the game presents blank squares, but when a gemstone lands, you can win up to 1,000 times your wager instantly. With this mechanism, you don’t depend on set paylines; you await the stones, jackpots, and free spins.

The game is fully mobile compatible.

Bonus Features

As with most slots, there is a bonus round in Gem Machine, although it works similarly to the base game.

Game Symbols

The symbols are all represented by different colour gemstones, except for the free spins. ‘Free Spins’ within a golden box of gears tells you how many spins you’ll receive.

  • Green Gemstones: 1x, 2x, or 5x stake
  • Blue Gemstones: 10x, 20x, or 50x stake
  • Amber Gemstones: 100x, 500x, or 1,000x stake

Each reel also has an elusive jackpot gemstone. From reel 1 to 5, they’re named Mini, Minor, Major, Mega, and Grand. These unique stones reward players 20, 40, 200, 400, and 1,000 times the bet value in an instant prize.

Bonus Rounds & Free Spins

Whenever you land free spins, the game will throw you into a bonus round. The Gem Machine guarantees a gemstone with every free spin. If you land another, they’ll add up.

Gem Machine Hits & Misses

The game is unique and stands out from competitors. Some of the features make it a hit, while others make it a miss.

  • Pros

  • Instant wins
  • Free spins
  • Mobile friendly
  • Average RTP is 96%
  • Cons

  • Few special features
  • Poor graphics


The Gem Machine by Bally is certainly unique compared to other slots. The low number of paylines takes away focusing on a winning combination. Instead, instant rewards take their place and make up for it because they are exciting and hit regularly. The free spins are lucrative because you’re guaranteed instant rewards.


Do I Need to Make a Deposit to Play This Game?

No, you don’t need to make a deposit. Most casinos offer the game as a free demo. However, you won’t win any real money.

What Is the Most Valuable Symbol in Gem Machine?

The Grand Jackpot gemstone on reel 5 is the most valuable symbol. It will reward you with an instant 1,000x wager prize.

What Is the Return to Player (RTP) Rate of Gem Machine?

The RTP of the reels is 95.00%, 95.50%, 96.00%, 96.50 and 97.00% from reel 1 to 5. The average with all active is 96%.

Can I Earn Real Cash Prizes in Gem Machine?

Yes, you can. When you play at a licensed operator and make a deposit, you can play Gem Machine for real money. If you play with an active cash balance, you can win instant cash prizes.

Does the Gem Machine Slot Have Jackpot?

Yes, it does. The game has 5 jackpot levels that correspond with each of the five reels. They reward you with instant prizes at up to 1,000 times the stake value.