Features of the Game
Book of Cats Theme, Layout, and How the Six Reel Mechanic Changes Play
One of the most rewarding online slots at sweepstakes casinos, Book of Cats is an Ancient Egypt-themed game with warm golds and cat imagery. On the base game screen, you’ll see 5 normal reels and then a 6th reel which is mostly locked away, revealing only one “open” cell during base game spins. That lone open cell can connect a winline into pay territory that a simple five by three grid would miss: if part of a winning combo lands on the visible reels and that same symbol lands in the unlocked 6th cell, that symbol blooms to fill all 3 slots on reel 6 and counts toward that win directly.
Once you trigger Free Spins and the 6th reel expands, it unlocks the full reel grid and turns the entire machine into an actual 6-reel field. Wins are still played out on the 10 paylines, but the interaction of that additional reel alters the flow of the session: base game spins seem tighter, more constricted, while the feature feels expanded.
Book of Cats Sweepstakes Slot Bonus Features Explained
Book of Cats groups nearly all of its worth into a narrow group of features, playing up its already very high volatility nature. The intersection of that 96.99% RTP and narrow focus is what places Book of Cats among the highest RTP slots at sweepstakes casinos, as its return is significantly higher than most other high volatile options. The table below shows the primary drivers of any substantial payout in Book of Cats.
| Feature | How it works |
|---|---|
| Golden Book | Acts as both Wild and Scatter, substituting for all symbols in the winning line |
| Free Spins Trigger | 3 or more Golden Book scatters award 10 free spins |
| Expanding Symbol | One symbol is chosen at random before Free Spins begin; pays across all active lines even off adjacent reels |
| Retriggers | Unlimited; further scatters add more spins |
| Winline Expanding Feature | Base game-only mechanic where a matching symbol in the unlocked 6th cell expands to complete a winning combination |
Choosing Between the Color and Suit Guess in the Risk Game
The Risk Game is a side bet that comes in two options:
- Guessing a color (Black or Red) is strictly a 2x double-odds or nothing wager on true odds.
- Guessing a suit (Spades, Clubs, Diamonds, Hearts) is not. In-game, you can confirm that it pays at close to 480x your current win instead of 2x. It is weighted to the 1-in-4 odds it carries and should never be considered a simple doubling of your win.
Because these options have very different risk levels, choose which option you’ll be using carefully. One tactic is to only use the suit wager on smaller wins that you don’t mind losing entirely, as it will lose three times more often than it pays. If you want to try to protect any wins at all, the color wager provides a closer to 50/50 shot without such a heavy penalty. In either case, learn to expect a loss on the Risk Game more often than not, as even that only pays out half the time.
How to Play Book of Cats Using the Sixth Reel
Book of Cats behaves unlike a traditional book slot as soon as the sixth reel locks into place. Skill with that single locked cell is what sets players apart, rather than chance. Follow these four steps for how to approach a session when playing the game at the best sweepstakes casinos online.
Step 1
Know What the Locked 6th Cell Actually Does
On any given spin, only one cell on the 6th reel will be open in the base game. If you land a winning combination on the paylines using symbols that appear on the exposed five reels, and those same symbols are in the open 6th cell, those symbols will grow to occupy all three positions on that reel. This growth results in an increase to the payout amount you can win.
Step 2
Track the Golden Book as Both Wild and Scatter
The Golden Book represents any symbol needed for a winning line. The Golden Book is also the Scatter which initiates Free Spins when you land three or more. As it fills both roles, a near-miss on the main grid could still be progressing towards a Free Spins trigger even if it doesn’t create a line win.
Step 3
Treat the Free Spins Expanding Symbol as the Real Prize
When Free Spins are triggered, one symbol is randomly selected to expand for the duration of the feature. This symbol will payout on all active lines, even if it is not positioned on adjacent reels. Since so much of the round’s value is determined by which symbol is selected, do not judge a Free Spins round by its first spin or two.
Step 4
Choose Your Risk Game Mode with the Odds in Mind
Following any win, Risk Game allows a color bet at odds of even money for a simple doubling, or a suit bet at 1-in-4 odds for a higher multiple. As they represent two truly different risk levels, determine in advance if you’re playing for a safer double or a larger, lower-percentage multiplier, rather than deciding on impulse after the fact.
Expert Picks: Best Sweepstakes Casinos Featuring Book of Cats
Book of Cats and other BGaming games are currently confirmed at these reputable sweepstakes casinos. Each casino features unique coin packages and different welcome offers. Below are five casinos we’ve confirmed to have the BGaming library.
| BGaming Sweepstakes Casino | Welcome Bonus |
|---|---|
| High 5 Casino | 250 GC + 5 SC + 600 Diamonds |
| McLuck Casino | 7,500 GC + 2.5 SC |
| Pulsz Casino | 5,000 GC + 2 SC |
| Hello Millions Casino | 15,000 GC + 2.5 SC |
| Spree Casino | 25,000 GC + 2.5 SC |
Symbols and Paytable of Book of Cats
Payouts below are per line. Most of the actual value comes when one of the premium symbols is chosen as the expanding symbol during Free Spins, as opposed to just regular base game line wins.
| Symbol | 6x | 5x | 4x | 3x | 2x |
|---|---|---|---|---|---|
| Cleopatra | 7,500 | 2,500 | 500 | 50 | 5 |
| Green Cat | 2,500 | 1,000 | 200 | 20 | 2 |
| Purple Cat Mask | 1,000 | 375 | 50 | 15 | 2 |
| Blue Ankh/Scepter | 1,000 | 375 | 50 | 15 | 2 |
| Golden Book (Wild/Scatter) | 400 | 200 | 20 | 2 | - |
| A/K (Card Royals) | 375 | 75 | 20 | 3 | - |
| Q/J/10 (Card Royals) | 250 | 50 | 12 | 3 | - |
Book of Cats and its Megaways Sequel: Which Sweepstakes Slot to Play
Book of Cats Megaways is BGaming’s sequel to the original slot game, sharing the Bastet aesthetic while operating on an entirely new matrix. While the original version sports fixed paylines and a locked sixth reel, Megaways replaces that format with flexible symbols per reel and cascading wins. Below, we break down the differences side-by-side.
Book of Cats
Book of Cats Megaways
Other High RTP Sweeps Slots to Try
If you’re looking for other high RTP slots to try at sweepstakes casinos, the games below could be good options.
| Slot | Provider | RTP | Volatility |
|---|---|---|---|
| Blood Suckers | NetEnt | 98.00% | Low |
| 1429 Uncharted Seas | Thunderkick | 98.00% | Medium |
| White Rabbit Megaways | Big Time Gaming | 97.72% | High |
| Jammin' Jars | Push Gaming | 96.83% | Very High |
| Money Train 3 | Relax Gaming | 96.10% | High |
Closing Verdict: Where Book of Cats Stands Among High Volatility Slots
Book of Cats is a strong choice if you’re looking for a traditional book format with a purposeful sixth reel bonus and a guaranteed 8,202x multiplier. Avoid it if low volatility or high base game RTP is what you’re after. As is usual with these kinds of slots, the trade-offs are obvious: 96.99% RTP, high volatility, and value that derives almost exclusively from the Free Spins.
Frequently Asked Questions
How Much Can I Win in Book of Cats at Sweepstakes Casinos?
The theoretical max win on Book of Cats is 8,202x. That potential is feature based, occurring via enlarged wild symbols during the Free Spin feature.
What Does the 6th Reel Do in the Book of Cats Slot?
Only one cell on the 6th reel is active in the base game, making for a winline that stretches past a standard five-by-three grid. On Free Spins, the entire 6th reel becomes available, expanding the game to a true 6 reel grid and increasing the ways you can win.
What is the Difference Between the Color Guess and Suit Guess in the Risk Game in Book of Cats?
The color bet is an even-money double-or-nothing wager. The suit bet offers much longer odds at 1-4, paying off at a much higher multiplier instead of just doubling your winnings.
Does the Expanding Symbol Need Adjacent Reels During Free Spins in Book of Cats?
No, the expanding symbol doesn’t require adjacent reels when Free Spins are active in Book of Cats. The randomly chosen symbol wins on all active lines according to game rules no matter where it lands.
What Triggers the Winline Expanding Feature in the Book of Cats Base Game?
The Winline Expanding Feature is activated when a winning combination occurs on the main playing grid and the identical symbol spins into the one free cell located on the 6th reel, allowing this symbol to expand onto all three cells located on that reel and contributing to the winning payout.