This is our own slot rating based on how popular the slot is, RTP (Return To Player) and Big Win potential.
Play the Hellcatraz free demo slot—no download required! Try Relax Gaming’s latest game, enjoy risk-free gameplay, explore features, and learn game strategies while playing responsibly. Read our expert Hellcatraz slot review with ratings for key insights before you play.
Released:May 5 2020
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Hellcatraz is a six-reel, 46,656-ways slot from Relax Gaming. It presents a retro take on the now-shuttered Alcatraz prison in San Francisco, California.
If you’re a fan of other retro slots, like Thunderkick’s Flame Busters, then you’ll be interested in this game. You can find out more about Hellcatraz slot, including its maximum payout of 51,840x your stake, in this review.
This game offers a 6x6 grid with 46,656 ways to win. It’s worth noting that Hellcatraz isn’t a pure Megaways slot. Instead, the 46,656 winning possibilities remain in place on every spin.
Payouts form when at least three matching symbols land in adjacent reels. All winning combinations must begin in the leftmost reel.
Visually, Hellcatraz takes you back to the late 1980s and early 90s. This era saw 8-bit console games and arcade machines rule the video gaming landscape.
The setting is a pixelated version of the famed Alcatraz prison. Located a mile off the coast of San Francisco, this island-based penitentiary housed some of America’s most-dangerous criminals.
Alcatraz closed in 1963, because its operating expenses put a serious dent in California’s state budget. However, it lives on through Hellcatraz slot and several famous movies (e.g. Clint Eastwood’s Escape from Alcatraz).
We’re not sure why the word “hell” is inserted into the game title. After all, Hellcatraz presents a lighthearted version of penitentiary life. The odd title aside, though, this slot offers a very entertaining atmosphere.
Regular symbols include four low-paying card suits, handcuffs, a badge, inmate, guard, and shark. The prison guard pays the most among this bunch at 2x your stake for six symbols. You can win a whopping 51,840x your bet when including features.
A “W” serves as the wild symbol. Appearing only on reels 2 through 6, it substitutes for every icon except a prison window (mystery icon) to form wins.
You can wager between €0.20 and €20 per spin. This betting range should appease low rollers and most high rollers.
The Hellcatraz RTP ranges from 96.30 to 96.88%. You achieve the latter end of this range by using the Buy Feature (covered later).
With 46,656 ways to win and a 51,840x maximum payout, Hellcatraz offers high volatility no matter what. However, you can choose between “Mixed Mode” (high volatility) and “Lockdown Mode” (extreme volatility) before starting play.
This slot offers cascading reels, which cause symbols from winning combinations to disappear and new icons to take their places.
Cascading reels continue until no new payouts form. At this point, you must place another bet to begin a new round.
Mystery Symbols come with a counter that decreases by 1 following a cascading win. Once the counter reaches zero, all Mystery Symbols transform into the same icon. This process gives you an opportunity to net big wins—especially with high-paying symbols.
The Key Collector meter tracks how many keys you collect throughout play. Small key symbols randomly appear at the top of the reels and award 1-10 keys.
When 2,000 keys fill the Collector meter, they trigger Super Free Spins. The latter bonus awards you 5 Super Free Spins, which offer Mystery Symbols regardless of cascading wins.
These free spins also offer Golden Mystery Symbols. A Golden Mystery icon helps you earn +1 free spin whenever two cascading wins occur.
Assuming you don’t want to wait on Super Free Spins to occur naturally, you can use the Buy Feature to automatically trigger the bonus.
This option costs 200x your stake with no keys collected. However, the price goes down as you accumulate more keys and use them in conjunction with the Buy Feature.
Hellcatraz is a very interesting slot from both a visual and features perspective. Beginning with the graphics, you can look forward to a fun, retro look that transports you back in time. If you’re a fan of video games from decades past, you’ll enjoy the appearance of this slot.
The features include two types of mystery symbols, Super Free Spins, and the ability to collect keys. Assuming you like slots that involve collecting items, then this game is for you.
Hellcatraz also offers huge potential wins worth up to 51,840x your stake. However, these big payouts contribute to the high volatility.
As long as you’re comfortable with volatility, though, you should definitely like Hellcatraz. It boasts fun gameplay, solid features, and large prizes.
Hellcatraz was released on May 5 2020.
This is our own slot rating based on how popular the slot is, RTP (Return To Player) and Big Win potential.
Yes! You can enjoy Hellcatraz in demo mode without signing up. Try our free version above to explore the features. For real money play, visit one of our recommended Relax Gaming casinos.
To play for real money:
The slot offers an epic max win of 51840x your stake.
Example: A €1 bet could return up to an insane €51840.
Yes! Most of our featured Relax Gaming casinos on this page offer welcome packages that include free spins or bonus cash usable on Hellcatraz. Always check the terms before claiming.
Absolutely. The game is fully optimized for mobile devices, including iOS and Android.
Yes, the demo mirrors the full version in gameplay, features, and visuals—just without real money payouts.