Play Gemtastic Slot Game


#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.

#AD New customers only, 10 free spins on registration (max withdrawal £100), 100 free spins after first deposit, min deposit £20, wagering 35x, 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

New depositing players only. Min. deposit: £10. Max. bonus: £200 + 25 Bonus Spins on Book of Dead. Offer valid on the first deposit. No wagering is required on Bonus Spins. Wagering Required on Bonus Cash: 40x. The match-up bonus that requires a deposit must be wagered 40x.


18+, New customers only, register, deposit and stake £20 on Big Bass Bonanza within 7 days, and claim 100 Free spins on Big Bass Bonanza. Free spins expire 30 days after credited. Ends 30/06/24 at 23:59 GMT. Full T&Cs Apply.

18+ new players only. Maximum £50 bonus. Minimum deposit: £20. Deposit Bonus wins are capped at £500. Max bet with active bonus: £2. Wagering requirement 100% match deposit bonus: 30 times sum of deposit + bonus. Winnings from Free Spins are credited as Real Money without wagering requirement. Some games may not be played with an active bonus. Games may contribute differently when wagering a bonus. Deposit Bonus expires after 30 days if wagering requirement has not been met. Free Spins expire after 3 days. One bonus allowed per person, address, device, IP. For full bonus terms and conditions, please read below. Responsible Gaming


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 to play the Gemtastic online slot at one of the online casinos recommended here 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 online casino account.


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.