UK Slots

Big Bass Mission Fishin'

How Big Bass Mission Fishin' Works

by Pragmatic Play

RTP
96.50%
Risk level
High
Max cash prize
5,000x
Reels
5x3
Paylines and ways
10 Lines
Release date
06/2024

The 100x Buy Feature in Big Bass Mission Fishin' pays for sequence

Big Bass Mission Fishin' prices its two shortcuts differently. The printed return stays 96.50% for the base game, for Ante Bet and for Buy Feature. That contrast matters because price here buys sequence, not return. Ante Bet raises the stake by half and adds Scatter symbols. The Buy Feature card locks the moment it switches on. Buy Feature charges 100x the bet, and the mission choice comes only after the payment clears. One documented run paid the 100x price twice. The first purchase ran Free Spins to completion. The second ran Stack the Cash to its last respin. High volatility and 10 Lines set the pace either way. For a player in Britain the local point is simple. The build is fully open here, and the screen's left edge shapes the session before the reels do.

Big Bass Mission Fishin' changes the route, not the mission

The 100x buy is the gate

The Buy Feature is priced at 100x the current total bet. At $6.00, the confirmation dialog reads $600.00. At $250.00, the card reads $25,000.00. Ante Bet switches the stake to x1.5 and disables Buy Feature. The rules print an RTP of 96.50% for base play, Ante Bet and Buy Feature. The constraint is therefore cost and access, not return. A British player meets the same maths through local stake limits and feature availability. The build does not show a separate UK ruleset.

One trigger, two mission routes

Three or more Scatter symbols open the same mission choice. The Free Spins Choice is not a second purchase. The paid route also ends at Select Your Mission. That keeps configurable variation ahead of the feature, not inside its payout grammar. Free Spins uses fish as Money symbols with values from 2x to 5000x total bet. Stack the Cash uses Fish Coin values from 1x to 25x total bet. Both routes still end at the 5000x total bet cap. The choice changes pressure and rhythm. It does not change the ceiling.

Folders tune the round before it starts

The captured upgrade screen shows six face-down Top Secret folders. The rules list five modifier types. They include More Fish, More Fisherman, Level 2 and extra spins. The reveal stops when a boot icon appears. Only Level 2 was captured as directly revealed in a natural trigger. The other icons are identified by rules text and pictograms. That uncertainty matters because the modifiers alter frequency and starting level. They do not alter the Free Spins collection loop. The Wild still gathers fish values while the retrigger track adds spins and multipliers.

Select Upgrades screen shows six face-down Top Secret folders with Level 2 and +2 Free Spins icons on sidebar.

Stack the Cash resets the same instinct

Stack the Cash strips the reels to coins and blanks. Four hearts set the Respin budget. A new Fish Coin locks and returns the count to four. A filled reel pays into its robo-crab and clears. A bomb then doubles the coins on one reel and the crab below it. The grammar is still collection plus reset. The expression is different from Free Spins. The ladder uses Retrigger and a Progressive Multiplier. The crab board uses reel fills and doubling. High volatility sits over both modes.

The variation is narrow by design

The strongest part is discipline. Ante Bet, Buy Feature and the folder reveal all change the route. None changes the published return or the 5000x total bet cap. The weak part is expectation. A player can read Ante Bet and Buy Feature as stacked tools. The build makes them exclusive. Another player can expect six folders to mean six proven upgrades. The record confirms five listed modifiers and one directly revealed card. For a British player, the local decision is exposure and availability. The game itself keeps one High volatility profile across 10 Lines.

Bankroll management and volatility explained

One screen splits the route between Free Spins and Stack the Cash. Reaching it is a separate decision: pay 100x or wait for Scatters. Ante Bet raises the natural trigger chance and locks Buy Feature. The stake prices every tool. Each consequence is documented. Each result stays random.

One mission screen, two different routes
Scatters or the buy both reach SELECT YOUR MISSION. That screen offers Free Spins or Stack the Cash; only the picked round plays. Free Spins carries fish money values up to 5000x and a retrigger ladder to 10x. Stack the Cash caps each coin at 25x; bombs double a reel's coins and crab. Captured rounds ended at $528 and $1,872 on a $6 bet. Those are single results, not a ranking.
Buy Feature buys timing, not odds
With Ante Bet off, Buy Feature is available. It charges 100x the current total bet and leads straight to SELECT YOUR MISSION. The stake can still be changed on the confirm screen, and the price follows it. Three or more Scatters reach the same screen without a fee. RTP reads 96.50% for the purchase, and the round stays random.
Ante Bet locks Buy Feature while it runs
Buy Feature stays disabled for as long as Ante Bet stays on. The toggle multiplies the total bet by 1.5. It also loads more Scatter symbols onto the reels. The promised trigger boost has no printed size. RTP reads 96.50% in both modes, so no return difference is documented.
Set the stake before pricing the tools
The total bet runs from $0.10 to $250 with Ante Bet off. That stake sets every derived price: Ante Bet charges 1.5x and Buy Feature 100x. The printed $375 maximum is the Ante-on figure, not the base ceiling. Wins scale with the stake; RTP does not.

Game modes

Nothing on this page works alone. The base state anchors both stake tools. Scatter symbols open the two bonus rounds, which always arrive as a single choice.

Congratulations screen announces 10 Free Spins with fisherman and fish catches icons, Free Spins Left 10.
Base GameThe default state on which every other card depends. Five reels and three rows carry ten fixed paylines. Wins pay left to right from the leftmost reel. Ante Bet and Buy Feature both sit on top of it. The scatter that opens the bonus choice lands only here.
Ante BetA stake toggle that raises the bet to 1.5x and adds more scatters to the reels. The extra scatters raise the chance of a natural Free Spins trigger. While the toggle stays on, Buy Feature remains locked.
Free SpinsThree or more scatters award 10, 15 or 20 spins. A card reveal before the first spin picks modifiers for the round. Each wild collects every money value on screen. Every fourth wild adds ten spins and steps the multiplier through 2x, 3x and 10x. The ladder stops at level four.
Stack the CashThe second option behind the same scatter choice. Only fish coins and blanks spin here. Four hearts set the respin count. Each coin that lands locks in place and refills all four. A falling bomb doubles every value on its reel, including its robo-crab. When the hearts run out, the five crab totals are summed and paid.
Buy FeatureOne purchase at 100x the total bet. It removes the wait for scatters but not the choice. After confirmation, the mission screen still asks for Free Spins or Stack the Cash. Ante Bet locks this card, so the toggle must be off first.

In-game screenshots

Big Win screen displays $144.00 with exploding coins over retrigger track showing x2 and x3 tiers.
Mega Win screen shows $180.00 with falling gold coins beneath a full x10 retrigger progress bar.
Base game reels show boat, dragonfly and $40.00 and $20.00 fish MONEY tiles with a $0.40 win.
Free Spins reels show WILD fisherman collecting $90.00 alongside $30.00 fish tiles and boats.
Select Upgrades reveal shows a Level 2 folder chosen, highlighted on the sidebar in green.
Free Spins reels pay WIN $528.00 with boat and $30.00 fish symbols, 1 free spin left.
×
Big Win screen displays $144.00 with exploding coins over retrigger track showing x2 and x3 tiers.
‹1 / 6›
×
Mega Win screen shows $180.00 with falling gold coins beneath a full x10 retrigger progress bar.
‹2 / 6›
×
Base game reels show boat, dragonfly and $40.00 and $20.00 fish MONEY tiles with a $0.40 win.
‹3 / 6›
×
Free Spins reels show WILD fisherman collecting $90.00 alongside $30.00 fish tiles and boats.
‹4 / 6›
×
Select Upgrades reveal shows a Level 2 folder chosen, highlighted on the sidebar in green.
‹5 / 6›
×
Free Spins reels pay WIN $528.00 with boat and $30.00 fish symbols, 1 free spin left.
‹6 / 6›

Symbols and their payouts

Game Rules page 1/9 lists payouts for boat, dragonfly, harpoon, tackle box, fish, letters, WILD and SCATTER symbols.

x2 / x3 / x4 / x5

  • Speedboat High 0.50 / 5.00 / 20.00 / 200.00
  • Dragonfly High — / 3.00 / 15.00 / 100.00
  • Harpoon spear-gun High — / 2.00 / 10.00 / 50.00
  • Tackle/money box High — / 2.00 / 10.00 / 50.00
  • Fish pile High — / 1.00 / 5.00 / 20.00
  • A Low — / 0.20 / 2.50 / 10.00
  • K Low — / 0.20 / 2.50 / 10.00
  • Q Low — / 0.20 / 1.00 / 5.00
  • J Low — / 0.20 / 1.00 / 5.00
  • 10 Low — / 0.20 / 1.00 / 5.00
  • WILD (fisherman/diver) Wild — / — / — / —
  • SCATTER (robotic bass) Scatter — / — / — / —
  • MONEY symbol / FISH COIN Other — / — / — / —

How to place a bet

The aim is to reach SELECT YOUR MISSION and choose FREE SPINS or STACK THE CASH. Base spins continue until the choice appears; the selected mission then runs to a paid total.

  1. Open the base game

    Press the round enter button on the preview screen. The base game opens with SPIN, bet controls, Ante Bet, and BUY FEATURE ready.

  2. Reach SELECT YOUR MISSION

    With Ante Bet off, confirm BUY FEATURE at 100x total bet and take the bought spin. The same screen follows when 3 or more SCATTER symbols land; a two-SCATTER near miss can still complete the trigger.

  3. Choose STACK THE CASH

    SELECT YOUR MISSION shows FREE SPINS and STACK THE CASH. Choose STACK THE CASH. The normal symbols fade away, leaving FISH COIN symbols, blanks, five robo-crabs, and 4 respin hearts.

  4. Spend the respins

    Each new FISH COIN locks, resets the respins to 4, and drops a bomb on a random reel. The bomb doubles that reel's FISH COIN and robo-crab values; a full reel pays into its robo-crab and clears. When the hearts run out, the five robo-crab values are added and paid.

What bonuses are on offer

Buy bonus option
Yes · Cost 100.00x
Ante bet increase
1.50x

Bonus buy options

Default option Buy Feature (choice of Free Spins or Stack the Cash) Cost 100.00x

Part of the series

Big Bass

Big Bass Mission Fishin' is the only shown build whose scatter trigger offers a choice: free spins or Stack the Cash. Stack the Cash is a hold-and-respin round. Coins pay 1x to 25x the bet; each new coin restores four respin lives. A falling bomb doubles the coins and robo-crab on its reel. Free spins carries the family core seen in Big Bass Bonanza. A fisherman wild collects fish values; retriggers raise the multiplier to x10. The win ceiling here is 5000x. Big Bass Bonanza and Big Bass Bonanza Reel Action cap at 2100x. Big Bass Vegas Double Down Deluxe also caps at 5000x.

Games in series
33

Game themes

Reel fishingDeep sea

Compatibility

Auto-spin feature
Yes

Features

  • Ante Bet
  • Free Spins Choice
  • Free Spins
  • Hold and Spin
  • Money Collect
  • Multiplier
  • Pick Bonus
  • Progressive Multiplier
  • Respin
  • Retrigger
  • Scatter
  • Wild

Studio behind the game

Pragmatic Play

Pragmatic Play is a Gibraltar-based content supplier to the iGaming industry, led by CEO Julian Jarvis. It distributes its full portfolio through a single API integration, covering online slots, live casino, bingo, virtual sports and other RNG games. The studio holds certification or licensing across more than thirty jurisdictions, including the Malta Gaming Authority and the UK Gambling Commission. Its games are built on a mobile-first HTML5 architecture aimed at regulated markets. Within this mirrored catalogue, output leans heavily toward video slots, spanning recurring series and mechanics like Megaways, Hold and Spin and Money Collect, alongside smaller runs of scratch, crash and table titles.

Bets and stakes

Min. bet
0.10
Maximum bet
250.00
Bet currency
USD

Our take

What players like

  • RTP stays at 96.50% on ante, buy, and standard spins, so no route quietly costs the player more.
  • Free spins open with upgrade picks and can retrigger up to a 10x collection multiplier.

Downsides to consider

  • The base game runs no wild across just ten lines, so high-volatility spells can feel bare.

This is a feature-first slot. Every route carries the same 96.50% return, a rare transparency. The base game does little between bonuses. A British player should size stakes for dry spells. Those content to ante or buy in will see the most of it.

Common questions about the game

What is the maximum win in Big Bass Mission Fishin'?

The maximum win is 5,000x the total bet. If a round, including a Free Spins round, reaches that cap, it ends at once. The win is awarded and any remaining spins or features are forfeited.

Can the Wild symbol land during the base game?

No. The Wild fisherman only appears during the Free Spins round. There he substitutes for every symbol except the Scatter and the Money symbol. He also collects the money values of all fish symbols on screen.

How do Free Spins retriggers and multipliers work?

Every Wild that lands during Free Spins is collected. Each fourth Wild awards 10 extra spins and raises the money multiplier: 2x at the second level, 3x at the third and 10x at the fourth. After the fourth level, no further retrigger is possible.

How does the Stack the Cash feature work?

Only Fish Coin symbols and blanks stay on the reels. The round starts with 4 respins, and every new coin resets the count to 4. A filled reel pays its coins onto that reel's robo-crab and clears. A bomb doubles the coin and crab values on a random reel. When respins run out, all five crab values are added together and paid.

Where to play

  • 1XBET

    Four deposits build the welcome offer. The first adds a 100 percent match up to $200. The second returns 50 percent up to $150. The third and fourth each add 30 percent up to $100, plus 40 free spins, credited within three days once each deposit clears.

    Open casino

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Published on 16/10/2026 Updated 22/10/2026

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