This is our own slot rating based on how popular the slot is, RTP (Return To Player) and Big Win potential.
Play the King of Kings free demo slot—no download required! Try Relax Gaming’s latest game, enjoy risk-free gameplay, explore features, and learn game strategies while playing responsibly. Read our expert King of Kings slot review with ratings for key insights before you play.
Released:April 3 2019
Responsible Gaming
You have to be 18 years or older to play our demo games. Please confirm that you are of the legal age to proceed:
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King of Kings is a video slot game created by the provider Relax Gaming. In this King of Kings slot review you’ll learn about its core features (including RTP, max win, and volatility), the bonus mechanics, and what helps the game stand out — along with the areas where it may fall short.
King of Kings is played on a 5 reel layout with up to 5 paylines/ways. The game includes a variety of features such as Jackpot, Respins, Retrigger, Symbol Upgrade, and more. There’s also a dedicated free spins bonus round, which is typically where the game’s biggest win potential comes into play.
The standard RTP (Return to Player) for King of Kings slot is 96% (Could be lower on some sites). This payback is good and considered to be about average for an online slot. Theoretically, this means that for every €100 put into the game, the expected payout would be €96. However, the RTP is calculated on millions of spins, which means that the output for each spin is always random.
The highest possible payout for this slot is 5000x your total bet which is pretty high and gives you the chance to win quite big wins. The maximum possible win is also calculated over a huge amount of spins, often one billion spins.
King of Kings was released on April 3 2019.
This is our own slot rating based on how popular the slot is, RTP (Return To Player) and Big Win potential.
Yes! You can enjoy King of Kings in demo mode without signing up. Try our free version above to explore the features. For real money play, visit one of our recommended Relax Gaming casinos.
To play for real money:
No! There is no Bonus Buy feature available in King of Kings. All bonus rounds must be triggered naturally during regular gameplay.
Yes. King of Kings is powered by Relax Gaming, a licensed provider that uses certified RNG (Random Number Generator) technology to ensure fair and unpredictable outcomes.
The slot offers a moderate max win of 5000x your stake.
Example: A €1 bet could return up to €5000.
Yes! Most of our featured Relax Gaming casinos on this page offer welcome packages that include free spins or bonus cash usable on King of Kings. Always check the terms before claiming.
Absolutely. The game is fully optimized for mobile devices, including iOS and Android.
Yes, many crypto‑friendly casinos offer King of Kings as long as they support games from Relax Gaming. You can usually play using popular cryptocurrencies like Bitcoin, Ethereum, or Litecoin. If you prefer crypto gaming, check out our list of trusted Bitcoin casinos to find platforms that accept digital currencies and feature Relax Gaming slots.
Yes, the demo mirrors the full version in gameplay, features, and visuals—just without real money payouts.
