Bubble Up! Guide: Rules, Frame Feature, Free Spins Modifiers and Super Spins

Bubble Up! slot by Pragmatic Play

By the CasinoDemo editorial team · Updated 2026-11-09 · How we review

Bubble Up! is an underwater slot from Pragmatic Play built around one idea: pufferfish Money symbols only pay when a bubble frame lands around them. The frames can grow, double up and multiply each other, and five jackpot tiers from Mini to Maxi sit above the reels.

We played the demo at a $2 base bet, bought the free spins twice, tried every Special Bet and read all eight rules pages. Every figure here comes from those pages or from our own screenshots.

Play Bubble Up! demo for free

Bubble Up! at a glance

Provider
Pragmatic Play
RTP
96.52%
Demo
Free, no sign-up

How Bubble Up! works

The game uses a 6x6 grid with 40 fixed paylines. Symbols pay from left to right on adjacent reels starting from the leftmost reel, and only the highest win is paid per line. The game is labelled high volatility.

At a $2 bet the paytable shows these prizes for 6, 5, 4 and 3 of a kind. The clownfish pays $50, $20, $10 and $3 (25x down to 1.5x the bet). The yellow angelfish pays $30, $10, $6 and $2.50, the pink fish $20, $8, $5 and $2, and the green fish $15, $6, $4 and $1.50. The seahorse and shrimp pay $7.50, $3, $2 and $1. The conch and snail shell pay $5, $2.50, $1.50 and $0.50, and the pink and yellow starfish pay $5, $2, $1 and $0.50.

The pufferfish Money symbols also pay on lines, from just 2 in a row: $0.50 for 2 up to $10 for 6 at a $2 bet. Their real job is the cash value printed on each one, covered below.

Bubble Up! base game 6x6 reels with fish symbols and the Maxi, Grand, Major, Minor and Mini jackpot bar
Base game at a $2 bet, jackpot values shown above the reels

Money symbols, jackpots and the Frame Feature

On every spin each Money symbol takes a random value, which you only win if it lands inside a frame. The possible values are 0.5x, 1x, 1.5x, 2x, 2.5x, 3x, 4x, 5x, 7.5x, 8x, 10x, 15x, 20x (Mini), 40x (Minor), 80x (Major), 200x (Grand), 400x, 800x, 2000x or 10000x (Maxi) the base bet. At $2 that puts the Mini at $40 and the Maxi at $20,000.

In the base game a frame of 2x2, 3x3, 4x4, 5x5 or 6x6 can appear at random in a random position. Sometimes a second frame appears on the same spin. Where two frames overlap, any Money symbol in the shared area gets a random 2x, 3x, 5x, 8x or 10x multiplier. All Money values inside a frame are added together and paid.

The Scatter is a pearl bubble marked FS and can land on any reel.

Free Spins and the coin pick

Hit 3, 4, 5 or 6 Scatters to win 6 free spins with 1, 2, 3 or 4 modifiers. Before the round, eight coins appear. You flip them until you reveal two matching names, and each matched pair becomes an active modifier. The four modifiers are:

MORE (pufferfish): more Money symbols on the reel strips. MORE (pearl): more Scatter symbols on the reel strips. LEVEL UP: the round starts with the frame already at 3x3. DUAL: two frames are guaranteed on every free spin.

At least one frame appears on every free spin, and special reels are in play. Every Scatter that lands goes into a trail above the reels. Each 3 collected grows the frame one size, from 2x2 up to the 6x6 maximum, and adds 2 more free spins. The bigger frame applies from the next spin, and if more than 3 Scatters land on one spin you get every upgrade they earn.

Bubble Up! FS scatter bubbles landing on the reels to trigger free spins
Scatters landing on the bought trigger spin
Bubble Up! coin pick screen revealing MORE, DUAL and LEVEL UP modifiers
Flipping coins to match a modifier
Bubble Up! free spins with a 4x4 frame covering pufferfish Money symbols and the Scatter trail above the reels
Frame grown to 4x4 during our second buy

Buy Feature

Buy Feature costs 100x the base bet ($200 at $2) and guarantees 3 or more Scatters on the triggering spin. Its RTP is 96.51%.

We bought it twice. Both times the coin pick gave the pearl MORE modifier. The first round grew to a 3x3 frame, ran for 8 free spins and paid $11.00, about 5.5x the bet, a heavy loss on a $200 buy. The second round pushed the frame to 5x5, ran for 12 free spins and paid $210.00, about 105x the bet. Two rounds is nowhere near an average; they just show how wide the spread is.

Bubble Up! Buy Feature menu offering free spins for $200, 100x the bet
Buy Feature at a $2 base bet
Bubble Up! free spins total win screen showing $210.00 in 12 free spins
Our second buy: $210.00 in 12 free spins

Special Bets: Ante, Super Spin 1 and Super Spin 2

The Special Bets button offers three stake modes. The rules list each as a bet multiplier against the normal 20x, so here they are as costs per spin at a $2 base bet.

Ante Bet costs 1.5x the base bet ($3). Free spins won with it reveal 2, 3, 4 or 4 modifiers for 3, 4, 5 or 6 Scatters, so a three-Scatter trigger gets two modifiers instead of one. We played 3 Ante spins and won nothing.

Super Spin 1 costs 20x the base bet ($40). One frame of random size is guaranteed on every spin, but Scatters cannot land and free spins cannot trigger. In 3 spins we got $0, $24 and $98; the $98 spin had a Mini jackpot symbol inside the frame.

Super Spin 2 costs 100x the base bet ($200) and guarantees two frames of random sizes on every spin, again with no Scatters. Our first spin paid nothing. The second covered most of the left side in pufferfish, including Grand, Major, Minor and Mini labels, and paid $504.50, about 252x the base bet. Every Special Bet mode has a listed RTP of 96.51%.

Bubble Up! Special Bets menu with Ante Bet $3, Super Spin 1 $40 and Super Spin 2 $200
Special Bets at a $2 base bet
Bubble Up! Super Spin 2 with two frames over jackpot pufferfish paying $504.50
Super Spin 2 paying $504.50 on a $200 spin

RTP, max win and bet range

The theoretical RTP is 96.52% in normal play and 96.51% with the Ante Bet, Super Spin 1, Super Spin 2 or the Buy Feature. The maximum win is 10,000x the bet; when a round reaches it, the round ends at once and remaining features or free spins are forfeited. The demo's bet range runs from $0.20 to $2,000.00, and it opens with a $100,000 demo balance in US dollars.

Our verdict

Bubble Up! is more involved than its cartoon look suggests. The line pays are modest, so nearly everything rides on frames landing over the right pufferfish, and the free spins add a real build-up with Scatters that keep stretching the frame. Our buys showed both ends: one round barely returned 5x, the other passed 100x. The Super Spins are the most unusual part. They skip free spins entirely and sell you guaranteed frames, at the same 96.51% RTP. That suits players who want constant frame action, but at 20x or 100x per spin they burn through a balance fast. Try them in the demo first.

How to play Bubble Up! free in Canada

Press Play demo for free on the game page and the Pragmatic Play demo loads with virtual credits. There is nothing to download, no account to create and no deposit to make, and it works in your browser on desktop and mobile.

Use the demo to see how the bonus round plays out and whether the game's pace suits you.

Playing Bubble Up! for real money in Canada

Real-money online gambling in Canada is regulated province by province. Ontario runs a regulated market where licensed operators are overseen by iGaming Ontario and the AGCO; other provinces offer play through their own provincial sites, such as PlayNow (British Columbia, Manitoba and Saskatchewan), Loto-Québec, PlayAlberta and ALC in Atlantic Canada.

The legal age is 19 in most provinces and 18 in Alberta, Manitoba and Quebec. Only play at sites licensed where you live, set limits before you start, and treat gambling as entertainment, never as a way to make money.

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Bubble Up! FAQ

What is the RTP of Bubble Up!?
The theoretical RTP is 96.52%. With the Ante Bet, Super Spin 1, Super Spin 2 or Buy Feature it is 96.51%.
What is the max win in Bubble Up!?
The maximum win is 10,000x the bet. The Maxi jackpot value on a Money symbol is also 10,000x the base bet.
How do Money symbols pay?
Each pufferfish Money symbol shows a random value from 0.5x to 10,000x the base bet. You win the value only if the symbol lands inside a frame, and all values inside a frame are added together.
How do I trigger free spins?
Land 3, 4, 5 or 6 Scatters for 6 free spins with 1, 2, 3 or 4 modifiers. You pick the modifiers by flipping coins until two match.
How much does the Bubble Up! bonus buy cost?
Buy Feature costs 100x the base bet and guarantees at least 3 Scatters on the trigger spin.
What do Super Spin 1 and Super Spin 2 do?
Super Spin 1 costs 20x the base bet and guarantees one frame every spin. Super Spin 2 costs 100x and guarantees two frames. With either one on, Scatters cannot land and free spins cannot trigger.

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