Underworld Empire has been catching plenty of attention, so we put it through its paces to see how it really holds up. Developed by KA Gaming, Underworld Empire arrives with a medium low-variance maths model and a return-to-player rate of 96.61%. Top wins are capped at 5,000x your stake, a healthy ceiling worth chasing. Dating back to 2024, it remains a regular pick. You get 5 reels and 10 paylines, all leaning into a vegas aesthetic. Here's how it stacks up.
Written by Sophie Williams · Last updated: March 2026
This release, Underworld Empire, is the work of KA Gaming. Presentation-wise it's built around a vegas theme, and it leans toward medium low volatility at an RTP of 96.61%. Under the hood you'll find a 5-reel grid running 10 paylines.
The mechanics are what make Underworld Empire interesting. Look out for scatter symbols that unlock free spins and extra bonus rounds. Thanks to its medium low variance, wins come often enough to suit casual, lower-risk play. 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.
Medium-low volatility offers a good balance of regular wins with occasional larger payouts. Expect frequent hits with modest amounts, suitable for casual players who want low-risk entertainment.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Underworld Empire 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
Underworld Empire by KA Gaming is a solid offering that delivers good entertainment value. The 96.61% RTP combined with medium low volatility creates a well-balanced gaming experience.