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Jackpot: 178,593.43

Stack’ Em High

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Stack ‘Em High Online Slots

You could win stacks of cash on Dr Slot’s Stack ‘Em High online slots! This classic casino-themed game will transport you straight to the betting table as you look to spin in big wins across 15 locked win lines.

To take your seat at the table, you’ll need a mobile or tablet device that runs iOS 11 or Android 5.0 and above.

New players can take advantage of the Doc’s Welcome Bonus and get up to 120 Free Spins and an up to £1,000 deposit match*! To see what you could win, sign up and create an account.

If you already have an account with Dr Slot, there are still multiple opportunities to bag yourself a no deposit bonus – including our excellent Refer a Friend offer! We also have the most convenient depositing option to date, available here at Dr Slot – Pay by Phone Bill!

*18+. New Players only. Up To 20 (18p) Free Spins (FS) awarded at registration. Up to 100 FS after first deposit awarded in sets over 10 days. FS locked to Fire and Gold. 24hr expiry. Up to £1,000 Welcome Bonus available via 5 deposit boosts. Min Deposit £10. 40x wagering requirement on bonuses and FS wins. Withdrawal of deposit excludes player. Further T&Cs apply. BeGambleAware.org

Stack ‘Em High Online Slots Index

How to Play Stack ‘Em High Online Slots

Before your start counting your chips, you’ll need to set your total bet in the ‘Bet’ menu. Your total bet is calculated by multiplying your chosen bet-per-line amount by the number of active win lines.

On Stack ‘Em High, win lines are locked to 15. So, selecting a bet-per-line of 10p would see a total bet of £1.50. The minimum you can bet-per-line is 1p and the maximum is £5. Once you’re ready, hit spin to begin!

Reel Wins

Win lines run from left to right and all wins are multiplied by your bet-per-line amount. Keep a keen eye on the ‘Paytable’ in the top-left corner to see what the symbols are worth and for more information on the game features.

To be dealt a win on Stack ‘Em High, you’ll need to match at least 3 symbols on an active win line. All winning lines will be highlighted on screen so don’t worry about missing any of the action. You can only win once on each win line, with only the highest win counting. However, wins across multiple win lines will be added together to form one stacked prize.

Chip Stacks Mini-Game

Spin in a total of 3 Bonus symbols on reels 1, 3 and 5 and you’ll be taking a seat at the Chip Stack Mini-Game! This fantastic feature could earn you big wins as the chips, and multipliers, get stacked higher and higher.

The Chip Stacks Mini-Game is a trail around the board with chips scattered across different spaces. Each chip has a multiplier value on it and your job is to keep pressing the number spinner to take steps along the trail.

Wherever you land, a new chip will land on that space with an even higher multiplier value. However, as you progress along the trail, some of the new chips could be Collect chips. Land on one of these and the feature will come to an end.

When this happens, the top chip on each space, and its multiplier value, will be added together to give you your prize total. This will then be added automatically to your on-screen amount before you return back to the main reels. Multipliers won in Chip Stacks will be locked to the value of your bet-per-line amount from your last paid-for spin.

Free Spins

Manage to land 3 Free Spins symbols on reels 2, 3 and 4 and you’ll be rewarded with 5 Free Spins. Apart from these spins being on the house, they also have a couple of extra special features to help you score a big win.

During Free Spins, a new higher value symbol can now be spun in. The Golden 7 symbol can even be used with the other 7 symbols to create Mixed Wins. You can also earn extra Free Spins if you spin in a +1 symbol onto the reels. Doing so will earn you – you guessed it – 1 extra Free Spin!

Free Spins are locked to the value of your bet-per-line amount of the last paid-for spin. Once you’ve taken all of your Free Spins, you’ll return back to the main reels with any winnings having been automatically added to your in-game credit.

Progressive Mega Jackpot

The occurrence of 5 (five) “JACKPOT” Jackpot symbols filling a win line on every reel awards the progressive Mega Jackpot. The progressive Mega Jackpot is available on any bet, with 0.025% of the bet being added to the progressive pots.  Half of the value gets added to the current jackpot, and half to a reserve pot ready for the next winner.

When the Jackpot is won, it is reset and begins to rise again. Simultaneous wins can occur. If a player wins the progressive Mega Jackpot then a notification would occur BEFORE any other player was awarded the Jackpot. Any players in a game that contributes to that same Mega Jackpot will receive the on-screen notification of a reset the next time they press the spin button if it is within 10 minutes of the jackpot being won. Players will not be charged for the spin generating this notification.

The Mega Jackpot guaranteed starting value is £150,000, with even higher starting prizes possible with a built up reserve pot. The Mega Jackpot promotional pot system is available over any stake on any participating game plugged into the Mega Jackpot promotional pot.

In the event of a communication error after a progressive win result has been determined and before it has been displayed on screen, the win amount will automatically be transferred to the player’s account. While the game is live, the Jackpots cannot be terminated.

Payout Information and Game Rules

Stack ‘Em High online slots has a theoretical return to player of 94.01%. This is based on long term playback. System malfunctions void all payments. Monies are staked in the following order:  winnings, player deposits, bonus credit.

Dr Slot general T&Cs apply. Wagering requirements apply to player deposits and any casino bonus offers.