Thinking about giving Monster File a spin? We tested it thoroughly so you know what to expect. This is a KA Gaming slot, sitting firmly in the a medium high-variance maths model bracket and paying back a return-to-player rate of 96.61%. Wins land at roughly a 30% hit rate, shaping how the sessions feel. The maximum win sits at 5,000x, so there's serious upside on the table. Visually it's wrapped in a halloween and horror theme, with the action running on 15 paylines across 5 reels. Here's how it stacks up.
Written by Sophie Williams · Last updated: February 2026
Monster File comes to us from KA Gaming, themed around halloween and horror. It runs on a 5-reel grid running 15 paylines with medium high volatility, and an RTP of 96.61%.
Dig into the bonuses and Monster File starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. The medium high volatility strikes a middle ground that should suit most playing styles. On balance, Monster File is a dependable option worth a few spins in the demo first.
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.
Medium-high volatility means wins come less frequently but tend to be larger when they hit. Players should be prepared for dry spells between bigger wins, requiring a moderate bankroll.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Monster File 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
Monster File by KA Gaming is a solid offering that delivers good entertainment value. The 96.61% RTP combined with medium high volatility creates a well-balanced gaming experience.