Blood Suckers

Editor's notes

Blood Suckers is the slot casinos would rather you didn't play with bonus money. At 98% theoretical return, it carries one of the lowest house edges of any video slot ever released — a full two points above the industry norm — and pairs it with low volatility, meaning frequent small wins rather than long dry spells. That combination makes it exceptionally efficient at grinding through wagering requirements, which is exactly why a large share of operators exclude it from bonus play entirely or set its wagering contribution to 0%. Check the bonus terms before you sit down; Blood Suckers appearing on a restricted-games list is one of the most common examples in the industry. Mechanically it is a classic NetEnt design: 5 reels, 3 rows, 25 fixed paylines, a gothic vampire-castle theme with garlic, crossbows and a cross-bearing bible among the symbols. Three or more scatters award 10 free spins with every win tripled, retriggerable from within the feature — this is where the 1,014.6x ceiling is reached. Three or more bonus symbols on an active payline open the Vampire Slaying Bonus, a pick-and-click round where you drive stakes through coffins for cash prizes until you open an empty one. There is no bonus buy. Bets run from 0.25 to 50 per spin. Originally released by NetEnt in 2009 as one of the studio's earliest video slots, with a mobile Touch edition following in 2013 — the date most sources quote — it has survived into a fourth decade of online casinos largely on the strength of its math. A sequel, Blood Suckers 2, arrived in 2017 with a redesigned engine, higher volatility and a lower 96.94% RTP; the two are separate games and should not be confused.