Blood Suckers (NetEnt) review: 98% RTP, and why casinos restrict it
The slot that defined "bonus hunting"
For a decade, "play Blood Suckers to clear your wagering" has been folk wisdom in casino-bonus communities — and for once the folklore is mathematically sound. A 98.00% RTP (2% house edge) combined with genuinely low volatility means a balance grinds down slowly and predictably, which is precisely what you want when you have to wager a bonus 30 or 40 times before withdrawing. The frequent small wins from its 25 paylines keep you in the game spin after spin.
The flip side is the part most reviews skip. Operators are not charities: they noticed the same maths, and Blood Suckers is now one of the most commonly excluded or down-weighted slots in bonus terms. At a casino where it counts 10% toward wagering, every £10 you bet on it only chips £1 off the requirement — quietly tripling or quadrupling the real cost of clearing. We flag this in our database with a "frequently excluded / weighted low" note, because the headline RTP genuinely misleads here.
Features
The vampire theme runs through two bonuses. A click-me coffin bonus has you opening coffins for instant cash until you hit a vampire — simple and frequent. Three or more scatters trigger 10 free spins at a 3x multiplier, the main source of bigger wins. The 1,014x max win is modest, in keeping with a low-variance design: this slot is about steady accumulation, not jackpots. The £0.25–£50 bet range suits both small and mid-stakes players.
What we like — and don't
Strengths
- 98% RTP with low volatility — superb bankroll preservation
- Fixed RTP, the same at every licensed casino
- Two accessible bonuses, including 3x free spins
- Frequent small wins keep sessions alive
- A genuinely proven, well-understood title
Weaknesses
- Frequently EXCLUDED or weighted low on bonus wagering — check first
- Small 1,014x max win
- Dated 2013 visuals
- Low volatility means little big-win excitement
Verdict
Skip if: you want big wins, or your casino weights it low on the bonus you're chasing.
Blood Suckers remains a benchmark for a reason: as a pure low-edge, low-volatility slot it does its job beautifully. The only thing standing between you and its value is the bonus terms at your casino — so treat the game-weighting table as part of the slot's spec sheet, not an afterthought. Read it, and Blood Suckers is one of the smartest spins in the lobby.