Thinking about giving Hellcatraz II a spin? We tested it thoroughly so you know what to expect. This is a Relax Gaming slot, sitting firmly in the a medium-variance maths model bracket and paying back a published RTP of 95.08%. The maximum win sits at 5,000x, so there's serious upside on the table. You get 5 reels and 25 paylines, all leaning into a halloween and horror aesthetic. It first went live in 2023 and still earns its place today. So does it deliver? Let's get into it.
Written by Sarah Mitchell · Last updated: February 2026
Hellcatraz II is a title from Relax Gaming, dressed up with a halloween and horror theme. It runs on 5 reels and 25 paylines with medium volatility, and an RTP of 95.08%.
The mechanics are what make Hellcatraz II interesting. Look out for scatter symbols that unlock free spins and extra bonus rounds. The medium volatility strikes a middle ground that should suit most playing styles. All told, it's a solid entry in the Relax Gaming catalogue.
At 95.08%, the RTP is slightly below the industry average of ~96%. While this is typical for many popular slots, players should be aware of the slightly lower theoretical return.
A balanced volatility profile with a mix of smaller frequent wins and occasional larger bonus payouts. Suitable for players who want steady action without extreme swings.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Hellcatraz II features scatter symbols that can trigger free spins rounds. Landing the required number of scatter symbols anywhere on the reels activates the free spins feature, giving you extra chances to win without additional bets. During free spins, special modifiers may apply to boost your winning potential.
3.0 / 5 — Good
Hellcatraz II by Relax Gaming is a solid offering that delivers good entertainment value. The 95.08% RTP combined with medium volatility creates a well-balanced gaming experience.