Searching for an honest 100 Zombies review before you commit real money? You're in the right place. Developed by Endorphina, 100 Zombies arrives with very high variance and 96.04% RTP. It first went live in 2018 and still earns its place today. You get 25 paylines across 5 reels, all wrapped in a halloween and horror theme. If everything lines up, 100 Zombies can pay up to 100,000x your bet. Let's break down what works and what doesn't.
Written by Rachel Kim · Last updated: January 2026
100 Zombies is a release from Endorphina, dressed up with a halloween and horror theme. It runs on 25 paylines across 5 reels with a very high-variance maths model, and a published RTP of 96.04%.
Where 100 Zombies earns its keep is the feature set. Look out for scatter symbols that unlock free spins and extra bonus rounds. The very high volatility means patience is rewarded — expect quiet spells broken by bigger hits. Overall it's a well-rounded release that knows what it is.
The RTP of 96.04% is right around the industry average of ~96%. This represents a fair return that's in line with what most modern slots offer.
Very high volatility delivers the most extreme payout profile — long dry spells punctuated by potentially massive wins. Only recommended for experienced players with substantial bankrolls and high risk tolerance.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
100 Zombies features scatter symbols that can trigger free spins rounds. Landing the required number of scatter symbols anywhere on the reels activates the free spins feature, giving you extra chances to win without additional bets. During free spins, special modifiers may apply to boost your winning potential.
3.0 / 5 — Good
100 Zombies by Endorphina is a solid offering that delivers good entertainment value. The 96.04% RTP combined with very high volatility creates a well-balanced gaming experience.