Book of Chilli - Big Bass Jackpot Bonanza Slot Review
by Pragmatic PlayReleased Sep 21, 2026

Specifications
| Game Type | Slots |
|---|---|
| RTP | 94.5% |
| Volatility | Medium |
| Max Win | 5,000x |
| Grid | 5x3 |
| Paylines | 10 fixed paylines, left to right on adjacent reels from the leftmost |
| Min Bet | $0.1 |
| Max Bet | $250 |
Let's just start with that name: Book of Chilli - Big Bass Jackpot Bonanza. Yes, that's the actual title, and no, it doesn't make any sense.
Pragmatic Play is in an era of copy-pasting right now, and this game is the perfect example. The slot is set in a sunny Italian kitchen. You're spinning reels full of chefs, jars of spicy Nduja, and plates of toast. So why is "Big Bass" in the title? Because Pragmatic slapped their famous fishing jackpot banner at the top of the screen to get your attention. There isn't a single fish in this game. It's literally a restaurant slot wearing a fishing hat.
To make matters worse, underneath that confusing theme, it's a nearly identical clone of Lotus Treasure - Oranje Jackpot and a bunch of other games they pushed out the exact same month.

The Vibe and the Base Game
If you've ever played a "Book" slot, you know exactly how this works. It's a standard 5x3 grid with 10 paylines. The Book symbol is your best friend because it acts as both your Wild and your Scatter.
Playing the base game isn't exactly a thrill ride; it's more of a slow leak on your balance. Something paid on just over half our spins, which sounds fine until you see the sizes: eight of our thirteen wins handed back exactly half a stake, and the best the base game managed all evening was 2.5x. A Book landing mid-line to rescue a payline was behind several of them. It's a medium-volatility game with a pretty grim RTP (Return to Player) of 94.50% and a max win of 5,000x your bet.

The Jackpot vs. The Bonus Buy (A Weird Design Choice)
Here is where the game design gets genuinely confusing.
The whole selling point is the four progressive jackpots hanging above the reels. These can drop randomly at the end of any normal spin, triggering a fun little pick-a-prize game. (Pro tip: betting higher gives you a slightly better chance of triggering it).
But here is the kicker: you cannot win the jackpot during free spins.
This makes the game's 100x "Bonus Buy" button incredibly frustrating. If you pay 100x your bet to skip the base game and go straight to the free spins, you are actively turning off the jackpot feature. Why would you pay a premium to skip the one thing that makes this game stand out?

The Free Spins
If you land three Books (or pay for the bonus), you get 10 free spins. Before they start, the game randomly picks one symbol to be your "special expanding symbol."
It's the classic mechanic: if enough of your special symbols land on the screen, they expand to cover their entire reels and pay out, even if they aren't next to each other. It's fun, but it cuts both ways. If you do the 100x Bonus Buy and get stuck with a low-paying symbol like the jar of Nduja, you're probably going to lose money. Our 100x buy drew exactly that jar and came back at 114x, and it needed a retrigger to get there: twenty spins instead of ten, seven of them paying nothing, and two spins worth 30x and 31x doing all the work. Paying 100x to make 14x is a wash dressed up as a win.
If you strip away the "Big Bass" jackpot signs, this is just a very average, low-RTP clone. If you love "Book" games, you are way better off playing ELK's Book of Toro or even Pragmatic's older Ancient Egypt, both offer much better math and double the max win potential.
If you do decide to play this one, don't touch the Bonus Buy button. The smartest way to play is to keep your bets low, grind the base game, and hope you get lucky with the random jackpot drop.

Played and reviewed by the SlotsReach editorial team · Published 23 Sept 2026