Quick answer
Hellcatraz is a Relax Gaming slot with 96.88% RTP, very high volatility and a 51,840x max win. It uses 46,656 ways with free spins, tumbling reels and mystery symbols. An official free demo is available. RTP can vary by casino.
Key specs
- RTP
- 96.88%
- Volatility
- Very high
- Hit frequency
- 19.92% (about 1 in 5.0 spins)
- Max win
- 51,840x
- Grid
- 6 reels
- Pays
- 46,656 ways
- Bet range
- $0.10–$25
- Jackpot
- None
Casinos with Relax Gaming games
- Aurivo Casino100% up to $1,000 + 200 Free Spins30x bonusCarries Relax GamingPlay at Aurivo Casino (opens in new tab)
18+. New customers. Min dep $20. 30x bonus wagering. Max bet $5. 30 days. 200 spins on Book of Dead at $0.20. Credited in daily batches of 20 over 10 days. Full T&Cs apply.
Key terms
18+. New customers only. Min deposit $20. 30x bonus wagering requirement. Max bet $5 while wagering. Free spins on Book of Dead at $0.20 per spin. Spins credited in daily batches of 20 over 10 days. Offer valid 30 days. Full T&Cs apply. Please gamble responsibly.
Check Hellcatraz is in the lobby in your country.
Themes:
Part of the Hellcatraz series.
Free demo Members
Try Hellcatraz with play money before deciding whether to play for real. Official Relax Gaming demos are free for GambGenius members.
How to play Hellcatraz (members only)
Instead of fixed lines, matching symbols on adjacent reels pay in any position, starting from the leftmost reel. The more matching symbols there are on each reel, the more ways the combination pays.
Hellcatraz is played on a 6 reels grid with 46,656 ways.
- Set your stake. Choose your total bet per spin between $0.10 and $25. Wins are paid as multiples of this stake.
- Check the paytable. Open the game's info screen to see what each symbol pays and the exact rules for this version.
- Spin. Each spin's result is decided by a certified random number generator, independent of previous spins.
- Trigger the bonus. Land the required scatter symbols to start the free spins feature.
The full Hellcatraz guide: how winnings work, 3 features and 4 strategy tips
- Your stake plan: a $50 budget → about $0.12 a spin (very high volatility)
- What 96.88% RTP costs per $100 wagered: $3.12 on average
- 3 features explained: free spins, tumbling reels, mystery symbols
- Stake plans for $20 to $250 budgets, checked against the $0.10 minimum bet
- 2 RTP versions compared: 96.88%, 96.46%
- 4 slots with the same style and a higher RTP (up to 98.1%)
- Strategy tips and a session planner for Hellcatraz
Free · no card · 18+ only
Never sold · export or delete any time · What do members get?
How winnings work (members only)
What 96.88% RTP costs per $100 wagered, the 51,840x max win at a $1 stake
The top prize is capped at 51,840x your stake. On a $1 spin that is $51,840; on $0.20 it is $10,368. When the cap is reached the round usually ends immediately.
Because winning symbols tumble away and are replaced, one paid spin can produce a chain of wins. All of them count towards that spin's total.
What 96.88% RTP means
Expected return = stake × 96.88%
Over $100 of total bets, the long-run average loss is $3.12
RTP is a long-run average across millions of spins. Any single session can finish far above or below it, especially on a very high volatility game.
The published hit frequency is 19.92%, meaning roughly one spin in 5.0 returns something — though many of those wins are smaller than the stake.
Features explained (members only)
3 features explained: free spins, tumbling reels, mystery symbols
Free spins
A bonus round of spins played at no cost to your balance, usually triggered by landing three or more scatter symbols. Wins during the round are added to your balance, and many games let you retrigger extra spins.
Tumbling reels
After a win, the winning symbols are removed and new ones fall into their place. This can create several consecutive wins from a single paid spin. Also called cascades or avalanches.
Mystery symbols
Special symbols that all reveal the same randomly chosen regular symbol, which can complete several wins at once.
Strategy tips (members only)
- Size your stake to the volatility. Very high volatility means most spins lose and a large share of the return comes from rare big features. Treat it as entertainment with a strict budget and a stake of around 0.5% of your session budget or less. A simple rule: bring at least 400 spins' worth of budget, so a $50 budget suggests a stake of about $0.12.
3 more tips and a session planner
- Check which RTP version you're playing. Relax Gaming offers this game at 96.88%, 96.46%. Open the game rules at your casino and prefer sites running the 96.88% version.
- Bonus wagering: at 96.88% RTP, clearing $1,000 of wagering costs about $31.20 on average. Check the bonus terms, as some casinos exclude specific games. Run your numbers in the wagering calculator.
- Set limits before you spin. Decide your loss limit and session time in advance and stop when you reach either. No pattern or betting system changes the outcome of a spin.
More on this in slot RTP and volatility explained and bankroll management.
Does it fit your budget? (members only)
Stake plans for $20 to $250 budgets, checked against the $0.10 minimum bet
For very high volatility we suggest a budget of at least 400 spins. This is what that means for Hellcatraz (bets from $0.10 up to a maximum bet of $25).
| Budget | Stake a spin | Bet range | Average cost of 400 spins |
|---|---|---|---|
| $20 | $0.05 | Below the $0.10 minimum bet | $0.62 |
| $50 | $0.12 | Fits | $1.56 |
| $100 | $0.25 | Fits | $3.12 |
| $250 | $0.62 | Fits | $7.80 |
Averages only: a short session can end far above or below them. Set a loss limit before you play.
RTP versions (members only)
2 RTP versions compared: 96.88%, 96.46%
Relax Gaming supplies Hellcatraz in 2 RTP versions and each casino chooses which one to run. Over $1,000 of bets, the 96.46% version costs about $4.20 more on average than the 96.88% version.
| Version | Average cost per $100 wagered | Extra vs best |
|---|---|---|
| 96.88% (best) | $3.12 | — |
| 96.46% | $3.54 | +$0.42 |
Open the game's rules or info screen at your casino to see which version it runs.
Seen a different version at a casino? How member RTP reports work
Same style, better RTP (members only)
4 slots with the same style and a higher RTP (up to 98.1%)
Slots with the same mechanic (ways to win) and volatility (very high) as Hellcatraz, with a higher published RTP. Casinos can still run lower versions of any of them.
Hero Clash98.1% RTP · +1.22 pts
Bikini Island Deluxe98% RTP · +1.12 pts
Egyptian Dreams Deluxe98% RTP · +1.12 pts
Happy Hatchlings98% RTP · +1.12 ptsQuestions
Frequently asked questions
Who makes Hellcatraz?
Hellcatraz is developed by Relax Gaming.
What is the RTP of Hellcatraz?
The default RTP of Hellcatraz is 96.88%. Relax Gaming also supplies versions at 96.46%, so check the game's info screen at your casino.
Is Hellcatraz high volatility?
Hellcatraz is rated very high volatility. Very high volatility means most spins lose and a large share of the return comes from rare big features.
What is the max win on Hellcatraz?
The maximum win on Hellcatraz is 51,840x your stake, which is $51,840 on a $1 spin.
Can I play Hellcatraz for free?
Yes. GambGenius members can play the official Relax Gaming demo of Hellcatraz free on this page. It uses play money only, so demo wins can't be withdrawn, and it is for players aged 18 and over.
Does Hellcatraz have a bonus buy?
No bonus buy is listed for Hellcatraz in the sources we checked.
Where can I play Hellcatraz?
Aurivo Casino carries Relax Gaming games. Check Hellcatraz is in the lobby in your country before you sign up. 18+ · New customers · T&Cs apply. Availability varies by country.
Where this data comes from
- relax-gaming.com Provider
- bigwinboard.com Slot database
Specs come from the provider's own site and 1 independent slot database. Casinos can run lower-RTP versions, so always check the game rules before you play.
Game artwork © Relax Gaming, shown to identify the game.
