Curious what Knock Knock actually feels like to play? Here's our full, no-fluff take. Built by ICONIC21, it lands as a slot with a high volatility profile and a return-to-player rate of 96.12%. You get 10 paylines across 5 reels, all given an engaging visual treatment. If everything lines up, Knock Knock can pay up to 5,000x your bet. So does it deliver? Let's get into it.
Written by Sarah Mitchell · Last updated: January 2026
Knock Knock comes to us from ICONIC21, given an engaging visual treatment and powered by 10 paylines across 5 reels. The result is a high volatility profile paired with 96.12% RTP.
With high variance, this one is aimed at players who can ride out the swings for the top wins. Overall it's a well-rounded title that knows what it is.
The RTP of 96.12% is right around the industry average of ~96%. This represents a fair return that's in line with what most modern slots offer.
High volatility means longer gaps between wins, but when wins do land, they can be significantly larger. A bigger bankroll and patience are recommended for this type of slot.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
3.0 / 5 — Good
Knock Knock by ICONIC21 is a solid offering that delivers good entertainment value. The 96.12% RTP combined with high volatility creates a well-balanced gaming experience.