Welcome to our deep dive on 40 Lucky King — the demo, the maths, and whether it earns a spot in your rotation. Built by Amusnet, it lands as a slot with very high volatility and a return-to-player rate of 96.26%. It's built around a fruit theme and plays out on a 5-reel grid running 20 paylines. If everything lines up, 40 Lucky King can pay up to 1,200,000x your bet. Originally released in 2020, it has aged well. But is it actually worth playing? Read on.
Written by Rachel Kim · Last updated: January 2026
This slot, 40 Lucky King, is the work of Amusnet, built around a fruit theme and powered by a 5-reel grid running 20 paylines. The result is very high variance paired with 96.26% RTP.
The mechanics are what make 40 Lucky King interesting. Look out for scatter symbols that unlock free spins and extra bonus rounds. With very high variance, this one is aimed at players who can ride out the swings for the top wins. Overall it's a well-rounded slot that knows what it is.
The RTP of 96.26% 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.
40 Lucky King 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
40 Lucky King by Amusnet is a solid offering that delivers good entertainment value. The 96.26% RTP combined with very high volatility creates a well-balanced gaming experience.