If you're trying to work out whether Frankenstein is worth your time, this hands-on review breaks it down. This is a KA Gaming slot, sitting firmly in the high variance bracket and paying back an RTP of 96.61%. Originally released in 2018, it has aged well. It's built around a halloween and horror theme and plays out on 20 paylines across 5 reels. The maximum win sits at 250,000x, so there's serious upside on the table. The full verdict is below.
Written by James Holloway · Last updated: February 2026
This release, Frankenstein, is the work of KA Gaming, themed around halloween and horror. It runs on a 5-reel grid running 20 paylines with high volatility, and 96.61% RTP.
Dig into the bonuses and Frankenstein starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. With high variance, this one is aimed at players who can ride out the swings for the top wins. Overall it's a well-rounded release that knows what it is.
With an RTP of 96.61%, this slot sits above the industry average of ~96%. Players can expect a solid return over extended play sessions, making it a good choice for value-conscious players.
High volatility means longer gaps between wins, but when wins do land, they can be significantly larger. A bigger bankroll and patience are recommended for this type of slot.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Frankenstein 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
Frankenstein by KA Gaming is a solid offering that delivers good entertainment value. The 96.61% RTP combined with high volatility creates a well-balanced gaming experience.