The verdict is blunt: most online casinos exclude Blood Suckers from bonus wagering entirely, and the reason is purely mathematical — a 98% RTP leaves operators almost no margin to absorb bonus exposure on the original NetEnt title. Before you claim any welcome offer expecting to grind it on this slot, read the game contribution table first.
Why Does Blood Suckers Get Excluded From Bonus Play?
Standard slots contribute 100% of every bet toward a casino's wagering requirement. Blood Suckers's 2% house edge makes that arrangement ruinous for the operator. According to GamblingSites.com, "many online casinos exclude Blood Suckers from bonus wagering because of its high RTP," and NetBet.org puts it plainly: "The fact that the payouts are so high on this slot means that the casinos exclude it from Wagering Requirements."
Some casinos take a softer approach — instead of a full exclusion, they reduce the contribution rate to 20–50%, meaning only a fraction of your bets actually count toward clearing the requirement. Either way, you should check the fine print before opting into any promotion with plans to play blood suckers.
What Do the Bonus Terms Actually Look Like?
Wagering requirements on US-facing online casinos reviewed by this site range from 15× to 60× deposit plus bonus. A 60× requirement is described by reviewers as above-standard and unfavorable. If Blood Suckers is excluded or contribution-capped, clearing 60× on other slots significantly extends the grind.
PlayUSA's advice cuts to it: "Use any casino promotions that offer real value (like wagering-free spins), but read the terms obsessively." There is no bonus buy in the original Blood Suckers or blood suckers 2 — every free-spin trigger must happen organically, which makes controlled wagering-requirement play even less predictable.
How Do All Three Blood Suckers Titles Compare for Bonus Play?
| Title | RTP (default) | Typical Bonus Contribution | Bonus Buy Available? | Volatility |
|---|---|---|---|---|
| Blood Suckers (NetEnt, 2013) | 98.00% | Often 0% (excluded) or reduced | No | Low |
| Blood Suckers 2 (NetEnt, 2017) | 96.94% | Varies; check operator terms | No | Low–medium |
| Blood Suckers Megaways (Red Tiger, 2023) | 97.66% (operators may offer 94.68%, 92.77%, or 90.77% variants) | Varies; high-RTP variant may be restricted | Yes (non-UK markets) | High |
The blood suckers slot rtp page covers the math behind each version in detail. For Megaways specifically, the operator-set RTP can fall as low as 90.77% — nearly 7 points below the headline figure — so the bonus-contribution question and the RTP question are intertwined when choosing where to play.
What Should You Do If You Want to Use a Bonus?
First, look for wagering-free spins promotions rather than deposit matches — a free spin with no wagering string attached is genuinely useful regardless of which game it targets. Second, if a casino does allow Blood Suckers for bonus play at a reduced contribution rate, calculate the effective cost: a 35× requirement with a 50% contribution rate is functionally a 70× requirement on that game.
Third, consider playing the demo first to decide whether the game suits your style before committing bonus funds to a long grind on alternatives. The blood suckers demo guide explains how to try all three titles without a deposit so you can make that call with real experience, not guesswork.
For a curated list of state-licensed US operators — legal in NJ, PA, MI, and WV — and their current promotion structures, see the Best US Casinos for Blood Suckers Slots in 2026 page. The blood suckers rtp breakdown also shows how even a small RTP gap between versions translates to real dollar differences over a long session. Real-money play is 21+ only; gambling problem? Call 1-800-GAMBLER.
Understanding the Blood Suckers vs Blood Suckers 2 differences in RTP and features can help you choose the version most likely to be bonus-eligible at your casino. Similarly, the Blood Suckers Megaways RTP variants page details how to confirm which configuration your operator is actually running — critical information before you decide whether to use bonus funds on it.
The Blood Suckers slot FAQs page includes an answer to the common question about why bonus exclusions happen and how to find out which games are eligible at your specific casino. The bottom line on Blood Suckers bonus wagering: the 98% RTP is great for your bankroll in normal play, and almost always a problem for bonus eligibility. Know that going in.