Reel Kingdom slots

Reel Kingdom and its Pragmatic Play partnership

Reel Kingdom is a slot developer that reaches casinos through Pragmatic Play, its distribution partner. In practice that means a Reel Kingdom game is hosted, supplied and branded through Pragmatic’s platform, so many players think of the Big Bass games as Pragmatic originals. Big Bass Bonanza is usually named alongside Gates of Olympus and Sweet Bonanza as one of the best-known games in Pragmatic’s portfolio; you can browse the distributor’s range on the Pragmatic Play homepage (opens in a new tab).

Our checked data does not give Reel Kingdom’s founding date, head office or its own licence details, so we don’t state them. What is clear is the output: one breakthrough game, a long fishing series built from it, and a handful of other titles such as Floating Dragon, Return of the Dead and Emerald King. For other studios, see our slot providers hub.

How the Fisherman collect mechanic works

Almost every Reel Kingdom slot in the series turns on one idea. During free spins, fish symbols land carrying cash values, and a Fisherman wild that lands on the same spin collects them all. Later games change who does the collecting: a Santa wild in Christmas Big Bass Bonanza, Punter wilds in Big Bass Day at the Races, and two Fisherman wilds at once in Big Bass Vegas Double Down Deluxe.

The other recurring lever is the multiplier. In several versions, collecting enough wilds upgrades the multiplier on later collections. Christmas Big Bass Bonanza tops out at 10×, while Big Bass Day at the Races lets multipliers rise to 50×. Higher ceilings like that are a big part of why the newer games quote much larger max wins.

The cash-collect idea is related to hold and win features, where money symbols lock in place, but in the classic Big Bass games the collection happens on ordinary free spins rather than in a separate respin grid.

Reel Kingdom slots compared: the Big Bass series

Every figure below is the default version from our checked slot data. Most games use 5 reels, 3 rows and 10 paylines; we note the exceptions.

Our Big Bass series page groups these by theme, and seasonal editions also appear on our Christmas slots and Halloween slots pages. For the wider genre, including other studios’ takes, see fishing slots.

Big Bass RTP: two price points, not one

Look down the RTP column and a pattern appears. One group of games sits at about 96.71%; another, mostly from 2022 onwards, sits at 96.07%. The 96.07% group tends to quote the bigger caps: Keeping it Reel, Amazon Xtreme, Hold & Spinner and Day at the Races all reach 10,000×. In plain terms, the newer games take a slightly bigger cut on average and push more of what they pay back into rare, large wins.

What does 0.64 percentage points cost? Over 500 spins at 20p you stake £100. At 96.71% the average loss is £3.29; at 96.07% it is £3.93. That 64p gap is small next to the swings of a single session, but it is a real, permanent difference in price. Our RTP explainer shows the same sum for any game.

Lower versions exist too. Our data shows Bigger Bass Bonanza at 95.67% and 94.62% as alternatives, and Big Bass Amazon Xtreme at 95.08% and 94.05%. At 94.05% the 20p example above would cost about £5.95 instead of £3.93, so it is worth checking the game’s rules screen before you play.

Volatility: why Big Bass sessions feel streaky

The Fisherman mechanic concentrates the return. In the base game you mostly see small line wins; the larger results come when free spins land and a wild coincides with valuable fish. That makes the series high volatility overall, with Amazon Xtreme and Hold & Spinner rated very high. Big Bass Vegas 1000 is an outlier at medium, despite its 15,000× cap. Free spins arrive at random: a long gap without them does not make the next spin more likely to trigger, as our page on whether a slot can be due a win explains.

What the max wins mean in pounds

Caps scale with your stake. On the original Big Bass Bonanza the 2,100× cap is £210 at 10p and £2,100 at £1. On Big Bass Bonanza 1000 the 20,000× cap is £2,000 at 10p. These are ceilings: once a cap is reached the game typically stops paying further wins, and Reel Kingdom does not publish how often that happens. For budgeting, the RTP and volatility tell you far more than the cap. See what a slot’s max win means.

Reel Kingdom slots beyond Big Bass

Floating Dragon is the clearest non-fishing title in our data: 5 reels, 3 rows, 10 fixed paylines, a 96.71% default RTP, high volatility and a 5,000× cap, released in 2021. Its figures sit very close to the Big Bass games, which suggests a shared design approach. Return of the Dead and Emerald King are also Reel Kingdom games, but we hold no verified specifications for them, so check each game’s help screen for its RTP, volatility and max win.

Working out what a Big Bass spin offer is worth

Because Big Bass Bonanza is a common choice for welcome spins, it helps to know how to value them. The method is simple and works for any spin offer:

1. Multiply the number of spins by the value of each spin to get the total stake (80 × 10p = £8).
2. Multiply that by the game’s RTP to get the average return (£8 × 96.71% = about £7.74).
3. Check the wagering: with no wagering, winnings are cash; with wagering, the house edge applies again to every pound you play through.
4. Check the expiry and any eligible-game list so the spins aren’t lost.
5. Remember the average hides a wide spread: many players will get less than £7.74, a few will get much more.

Our free spins value guide covers wagering and caps in more depth, and no wagering bonuses explains why spins without wagering are easier to value.

Playing Reel Kingdom slots under UK rules

• The most you can stake is £5 a spin from age 25, or £2 if you are 18–24, under the Gambling Commission’s online slot stake limits (opens in a new tab).
• Each spin must take at least 2.5 seconds, with no autoplay, turbo or slam-stop, and the game can’t celebrate a return that is lower than your stake. Our game design rules page lists every change.
• Since a Gambling Commission warning in January 2020, feature buy-ins are not offered to British players, so UK versions of Big Bass games don’t let you pay to jump into free spins.
• You must pass age verification even to open the demo version.

Where to play Reel Kingdom slots

PlayOJO’s welcome offer is the most direct match for this page, because its spins are played on Big Bass Bonanza. New UK customers aged 18+ (Northern Ireland excluded) get 80 free spins at 10p each after a first deposit of at least £10, with no wagering, so winnings are paid as cash; it can’t be combined with other offers and terms apply. Read the detail in our PlayOJO welcome bonus guide.

Coral and Ladbrokes give spins on selected slots rather than a named Big Bass game, so check each casino’s game lobby to see what qualifies. Coral: deposit and bet £10 on slots for 100 free spins at 10p, accept within 48 hours, use within 7 days, no wagering on winnings, offer period 1 October 2026 to 1 February 2027, with PayPal, Skrill, Neteller, Paysafe, prepaid cards and some debit cards excluded. Ladbrokes: deposit and play £10 on slots for 50 free spins a day over 10 days (500 maximum), 10p each, claim by 23:59 each day, 7 days to use, no wagering, with prepaid cards, PayPal, Paysafe, Neteller, Skrill and Moneybookers deposits excluded. Both are 18+ with terms applying, and both are run by LC International Limited.

18+. Every casino game has a built-in house edge, so over time you should expect to lose what you stake. Set a budget before you play and stop when it’s gone: safer gambling tools and support. Free, confidential help: National Gambling Helpline 0808 8020 133.