Play Gemtastic Slot Game


18+ New Customers only. GB and ROI only. Use promocode: casino50 Minimum deposit & wager £25 on Drops & Wins slots required. 50 x 10p free spins on Big Bass Bonanza valid for 7 days, winnings capped at £500. Wagering must be completed within 24 hours of registration. Restrictions + T&Cs apply.

This promotion is for new customers only. Customers must be 18+. Customers must be residents of the UK/IE.

New customers only aged 18+. Minimum deposit £10. Get a Casino Bonus matched to your first deposit, up to £100, after you stake £20 on slots, credited within 48 hours. Bonus expires in 7 days and has a 40x wagering requirement. Additional T&Cs apply. Please bet responsibly.

New customers & 18+ only. Min. deposit of £10. Qualifying real money bet of £10. Min odds greater than or equal to 1.5 required. E/W bets excluded. Offer credited within 48 hours. Additional T&Cs apply. Please gamble responsibly.

#AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18, Please Gamble responsible.


Play to win a jackpot of up to 10,000x your stake and enjoy lots of bonus features including multipliers, bonus spins, wilds, chain reaction reels, and more from just 20p a spin. There’s a cool mining theme, fantastic graphics and sound effects, and lots of ways to win. Designed by Red Tiger, you can expect reliable game play and plenty of entertainment when you choose Gemtastic online slots at UK.


  • Game Type: 6 reels, 30 paylines video slot
  • Return to Player (RTP): 96.07%
  • Volatility: High
  • Themes: Mining, History, Diamonds
  • Release Year: 2019


To win the biggest possible payout of 10,000x your stake, you require the bonus features to kick in. When multipliers reach into double figures during bonus rounds, you could win this jackpot amount on any spin!


Set in a diamond mine, your icons include 9 different coloured gems and the biggest paying icon is your orange gemstone; win up to 12x your stake when you match 6 in a row. Bets range from 20p to £10 per spin, with coins starting at just 1p.

The rainbow-coloured W is your wild and this replaces other symbols for more chances to match a winning combination. Wilds also award payouts, with up to 75x your stake for 6 on a payline.

‘Chain reaction’ reels are a prominent and popular feature; every win sets this feature in motion. After you have received your payout, all winning icons disappear and are immediately replaced with new symbols. Win again, and the feature repeats.

These extra symbols are bonus re-spins, at no extra cost to your bankroll. And with each successive win, you receive a multiplier that increases 1x, leading to wins of up to 15x the standard payout.

Other bonus features include:

  • Magic Glow: this feature can occur on any spin. If a gem sparkles, and helps complete a win, all sparkling gems disperse and transform into wilds on the bonus respin.
  • Mega Gems: this features symbols of 2x2 or 3x3 on the reels for more chances to win, and to win bigger also. These are possible during the Magic Glow feature also.


Designed by Red Tiger gaming, both iOS and Android operating systems are supported, so you enjoy stable gameplay and responsive software, to maximise your gaming experience on the move.


Play Gemtastic slots for real money on all mobile devices and computers from 20p up to £10 per spin. To play and win real money, you must make a deposit into your bankroll in the Cashier.


A game full of fun and sparkle and giant potential wins, the multipliers are probably the biggest attraction and certainly offer the biggest chances of landing a huge win. Easy to learn and straightforward to navigate, this is a great choice for new online slots players as well as those with more experience.