Last updated: 15-06-2026
I'm going to open with the number that makes Blood Suckers unique in the Memo library, because it deserves the directness: 97.66% RTP. That's the highest certified return-to-player figure on any regularly played slot in the Memo catalogue. Not highest in a subcategory — highest overall among the slots that players actually use for sustained sessions. For context: a slot at 96% RTP and a slot at 97.66% RTP, both played at £0.50/spin for a 200-spin session (£100 of activation cost), have an expected return difference of £1.66. Across 50 such sessions in a year, that's £83 in expected return advantage. This is the mathematical case for Blood Suckers, and it's real and persistent regardless of how many newer, flashier games enter the library around it.
The bonus mechanics: vampire slaying and free spins with 3x multiplier
Blood Suckers runs on a 5×3 grid with 25 paylines and a gothic horror aesthetic — stone crypts, vampire noblemen, holy water, stakes and garlic. The art direction is consistent and effective without being gratuitously violent. Two distinct bonus features provide the session highlights:
Vampire Slaying bonus — triggered by three or more scatter symbols (the crypt). You're presented with a selection of coffins; opening each reveals either a vampire (pay a cash prize and continue) or nothing (feature ends). The bonus pays at the moment it ends; more successful vampire slayings accumulate a larger total. It's a pick-feature with a clean aesthetic integration — slaying vampires in a vampire slot feels coherent rather than arbitrary.
Free spins — triggered by three or more scatter symbols during specific game states. Twelve free spins are awarded with a 3x multiplier on all wins. The 3x multiplier during 12 activations is where Blood Suckers generates its highest session outcomes — strong symbol combinations during free spins at 3x can produce wins that significantly exceed base game hit frequencies.
| Specification | Value | Notes |
|---|---|---|
| RTP | 97.66% | Highest in the Memo library for regular-play slots |
| Volatility | Low–Medium | Consistent activity; predictable session character |
| Free spins | 12 spins + 3x multiplier | Key session peak; consistent structure |
| Vampire Slaying bonus | Pick-feature coffins | Accumulates prize with each vampire slain |
| Paylines | 25 | Full-coverage payline structure |
| Max win | ~400x | Lower ceiling; higher frequency — correct trade-off |
Author's tip from Caleb Donovan, Online Casino Content Specialist:
"Blood Suckers is one of the clearest choices for wagering requirement clearing at Memo — 97.66% RTP, low-medium volatility, and a bonus structure that produces regular activity without long dry patches. The single most important check before using it for clearing: confirm it contributes at 100% toward your specific active offer. Some bonus terms specifically restrict high-RTP slots because of their clearing efficiency. If Blood Suckers is in your eligible games list at 100% contribution, it's the mechanically optimal clearing choice in the library."
Blood Suckers 2: the sequel and why the RTP comparison matters
Blood Suckers 2 is also available at Memo — updated visuals, different mechanics, a different slot experience. But its RTP is 95.28%, which is 2.38 percentage points below the original. For players choosing between the two, that gap is significant: the original's 97.66% outperforms the sequel's 95.28% by a margin that's the largest RTP difference between a slot and its sequel in the Memo library. The sequel's visual upgrade doesn't compensate mathematically for this gap — it's an aesthetic improvement at a meaningful mathematical cost.
My recommendation: play the original Blood Suckers for the RTP advantage and the clean, well-executed vampire horror experience it delivers. Play Blood Suckers 2 if you specifically want the updated visual experience and are comfortable with the RTP reduction. The choice should be informed by knowing both figures — which you now do.
Author's tip from Caleb Donovan, Online Casino Content Specialist:
"The Vampire Slaying bonus in Blood Suckers is a genuine pick-feature rather than a random-reveal mechanic — the choices matter in terms of which coffins you open, even though you can't know in advance what's behind each one. Systematically working through the available coffins (opening each one rather than guessing) is the only rational approach: every coffin has the same ex-ante probability of containing a vampire, so there's no strategy that improves your outcomes beyond opening them in sequence until the feature ends."
Compare with Immortal Romance for the NetEnt vampire alternative with progressive Chamber mechanics. Browse all NetEnt and atmospheric gothic titles at slots. The glossary covers RTP, free spins multipliers, and pick-feature mechanics. Get the Memo app. Log in to play. All gambling at Memo is for players in England aged 18 and over.
Session economics and responsible play at Memo for England players
Online slot sessions have an expected cost — a mathematically predictable function of stake, RTP, and spin count. Understanding this cost before you start is the most useful frame for any session at Memo. A 200-spin session at £0.50/spin on a 96% RTP game costs £100 in activation and expects £96 in return — a net expected cost of £4.00 for the entertainment. The volatility label tells you how variable that net outcome is: low volatility means most sessions end within a narrow band of that expectation; very high volatility means individual sessions can land anywhere from near-zero to multiples of the activation cost.
Neither the expected cost nor the volatility makes a game good or bad. They make it appropriate or inappropriate for a specific session budget and intent. A very-high-variance game with a high ceiling is excellent for a player who has budget for 150+ spins and specifically wants the possibility of a large single-session outcome. The same game is a poor choice for a player with budget for 30 spins who needs predictable results. This mismatch — between the game's design intent and the session parameters the player brings — is the source of most avoidable disappointment in online slots. The information on this page, combined with the game panel at Memo, gives you everything you need to avoid it.
The practical pre-session checklist for any title at Memo in England: confirm RTP and volatility in the game information panel, calculate your spin count at your intended stake (budget ÷ stake), check whether your stake gives you adequate spin count for the volatility, set your session limits in account settings before the first activation, and confirm the game's contribution rate toward any active bonus before committing to a clearing session. These steps take under three minutes and fundamentally change the quality of your session decision. The Memo library rewards players who use the information available — the game panel, this page, and the glossary together give you more context than most players ever access.
Download the Memo app for full mobile access to the library and account management tools. Browse the complete catalogue at slots. Log in to play now. All gambling at Memo is for players in England aged 18 and over. Please use the responsible gambling tools available in your account settings at any time.
Building long-term value from the Memo slots library in England
The players who get the most sustained value from a slots library like Memo's aren't necessarily the ones who find the highest single-session win. They're the ones who understand which games serve which purposes, rotate intelligently between session types, and use the library's resources — game information panels, the glossary, the app's account management tools — proactively rather than reactively. A player who chooses Blood Suckers for clearing sessions, Gonzo's Quest or Immortal Romance for mid-variance entertainment, and reserves Wanted Dead or a Wild or Gates of Olympus Super Scatter for high-energy high-variance sessions when their budget specifically supports it has an organised approach that produces better aggregate experiences than opening whatever's featured on the homepage.
This page covers one specific game in that framework. The cross-links on this page point to the most natural comparisons for different session needs. The slots hub gives you the full catalogue organised by format. The glossary makes every mechanical term legible. The Memo app keeps all of this accessible from your device. Building the habit of using these resources before sessions — not just when something goes wrong — is the practice that separates genuinely informed play from hope and luck. Log in to start playing now. All gambling at Memo is for players in England aged 18 and over.
Understanding your session at Memo: RTP, variance and real outcomes for England players
Every slot in the Memo library operates under the same mathematical framework: a certified RTP and a volatility classification that together describe what the game returns and how it distributes that return across sessions. What these numbers don't do is describe any individual session — they're aggregate statistics over millions of activations, and individual sessions can deviate substantially from the expected return in either direction. This is the correct understanding of slot mathematics, and it's different from both the "the machine owes me a win" thinking (it doesn't) and the "this game is rigged because I had a bad session" thinking (it isn't).
The game on this page has a certified RTP displayed in its information panel at Memo. That number means: across all activations on this game across all players over all sessions, that percentage returns as prizes. Your specific session will return more or less than that figure — the volatility label tells you by how much the distribution spreads. High volatility means your session could return significantly above or significantly below expectation; low volatility means it'll cluster more tightly around the expected value. Both are honest descriptions of how the game was designed to behave.
Working with this framework rather than against it produces better session decisions. Size your stake for adequate spin count given the volatility. Set your session budget before starting and treat it as fixed. Use the account tools at Memo — deposit limits, session time alerts, loss limits — to enforce the boundaries you set when you were thinking clearly rather than in the heat of an active session. These tools exist precisely because in-session decision-making is harder than pre-session decision-making, and designing your session around that reality is the intelligent approach.
The glossary at Memo gives clear definitions for every mechanic term. The Memo app provides mobile access to the full library and all account management tools. Browse the complete catalogue at slots. Log in to play. All gambling at Memo is for players in England aged 18 and over — please play within your means at all times.
