RTP variants explained: why 96.35% beats 86.21%

Here is a fact that surprises a lot of slot players: the same game can pay back noticeably more at one casino than at another. Not because of luck — because of a setting called the RTP variant. For Pray for Six, that setting ranges from a generous 96.35% down to a punishing 86.21%, and knowing the difference is one of the easiest ways to play smarter.

This guide explains what RTP is, why a single slot has several versions, exactly what that gap costs you, and how to check the RTP before you spin. No maths degree required.

What is RTP?

RTP stands for Return to Player. It is the percentage of all the money wagered on a slot that the game is designed to pay back to players over a very long run — we are talking hundreds of millions of spins, not a single session.

A slot with a 96% RTP is built to return, on average, 96 units for every 100 staked. The remaining 4% is the house edge — the built-in mathematical margin that the casino keeps. RTP and house edge are simply two sides of the same coin: a 96% RTP means a 4% house edge, an 88% RTP means a 12% house edge.

Two things are worth being clear about. First, RTP is a long-term theoretical average — over one evening you can win far above it or lose far below it. Second, RTP says nothing about volatility: two slots can share the same RTP while one pays small amounts often and the other pays rarely but big. Pray for Six is the second kind.

Why do RTP variants exist?

Since around 2021, a growing number of slot studios — Hacksaw Gaming among them — ship each game with several RTP settings. A typical Hacksaw slot has up to four, usually spanning roughly 88% to 96%. The game itself is identical: same symbols, same features, same artwork. Only the underlying maths model changes.

The crucial part: the casino operator decides which version to run. When an operator makes a slot live on its site, it picks one of the provider's RTP configurations. That is why the exact same Pray for Six can be a 96.35% game at one casino and an 86.21% game at another.

The game on screen looks identical at every casino. The RTP variant running underneath it is not — and only the casino knows which one you are playing until you check.

There is a second catch. Most slot review and aggregator sites publish only the highest RTP a game can have, because that is the headline figure the provider markets. They rarely tell you that a specific casino might be running a much lower build. That makes the published "96.35%" a best case, not a guarantee.

96.35% vs 86.21%: what the gap actually costs

A 10-point RTP gap sounds abstract, so let us make it concrete. Imagine you wager a total of 10,000 units over an extended period of play — not in one spin, but across a long run of normal-sized bets.

• At 96.35% RTP, the theoretical house take is 3.65% — about 365 units over that 10,000 wagered.
• At 86.21% RTP, the house take jumps to 13.79% — about 1,379 units over the same 10,000.

That is the same game, the same features, the same fun — but the low-RTP version costs you roughly four times more to the house over the long run. Put differently: the house edge on the 86.21% build is nearly quadruple that of the 96.35% build.

This does not mean you will lose exactly that amount — volatility makes any single session unpredictable. But over weeks and months of play, a lower RTP variant quietly drains your bankroll faster. It is the single biggest controllable factor in how long your money lasts.

Video explainer

If you would rather watch a breakdown of how slot RTP works, this short explainer covers the core idea. Click the thumbnail to load the video.

How to check a slot's RTP before you play

The good news: checking is quick, and Hacksaw Gaming makes the active figure public inside every game. Here is the routine to follow before betting real money on Pray for Six — or any modern slot.

1. Open the game at your chosen casino and let it load.
2. Open the info or paytable panel — usually an "i", a menu icon, or a "Game Rules" link in the slot's interface.
3. Find the RTP line. The info panel states the exact RTP active at that specific casino — this is the number that matters, not the one on review sites.
4. Compare it to the maximum. For Pray for Six the best build is 96.35%. If the casino shows 92% or lower, consider playing elsewhere.
5. Check before every casino. RTP is set per operator, so a figure you confirmed at one site tells you nothing about another.

Independent testing laboratories such as iTech Labs and eCOGRA certify that slot RNGs and RTP figures are accurate, and licensed casinos are required to display the active RTP. A casino that hides this information is a warning sign in itself.

Quick rules of thumb

• Treat the published RTP as a best case, never a promise.
• Aim for the 96%+ build of any Hacksaw slot when it is available.
• Avoid casinos that only offer low variants (around 88–92%) or that hide the figure entirely.
• Use the free demo to enjoy the game itself — the demo always behaves like the top RTP build.

Frequently asked questions

A few common questions about RTP, answered briefly.

Does a higher RTP mean I will win more often?

Not necessarily more often — that is volatility. A higher RTP means more of your total wagering comes back over the long run. On a high-volatility slot like Pray for Six, wins are still rare; a better RTP simply makes the long-term maths less steep.

Is a low-RTP slot rigged?

No. A low RTP variant is not cheating — it is a legitimate, certified configuration the casino chose. It is simply a worse deal for you, which is exactly why checking matters.

Does the bonus buy have its own RTP?

Often, yes. On many Hacksaw slots the bonus-buy RTP differs slightly from the base game. The same advice applies: check the info panel, which lists the relevant figures.

The bottom line: RTP is the one piece of slot maths fully within your control. You cannot change volatility or influence a spin, but you can choose a casino running the 96.35% build of Pray for Six instead of the 86.21% one. That single habit — a 20-second check in the info panel — is the most effective thing a slot player can do. And as always, gamble only with money you can afford to lose; if it stops being fun, our Responsible Gaming page lists free, confidential support.