Reel King has been catching plenty of attention, so we put it through its paces to see how it really holds up. This is a Greentube title, sitting firmly in the very high volatility bracket and paying back a published RTP of 94%. It's finished with a clean, modern look and plays out on a 5-reel grid running 15 paylines. Dating back to 2017, it remains a regular pick. If everything lines up, Reel King can pay up to 50,000x your bet. Let's break down what works and what doesn't.
Written by Alex Crawford · Last updated: January 2026
At its core, Reel King is a slot game produced by Greentube, wrapped in polished, characterful visuals. It runs on 5 reels and 15 paylines with very high variance, and 94% RTP.
Where Reel King earns its keep is the feature set. 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 straightforward slot game that knows what it is.
The RTP of 94% is below the industry average of ~96%. This is common for older slots or those with special features. The lower RTP may be offset by unique mechanics or higher maximum win potential.
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.
Reel 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.
2.5 / 5 — Average
Reel King by Greentube provides a straightforward slot experience. While it may not break new ground, it offers very high volatility gameplay that will appeal to certain player preferences.