Before you load Lock & Key for real, spend a couple of minutes on how it genuinely performs. Developed by Slot Factory, Lock & Key arrives with a high-variance maths model and an RTP of 94.02%. The maximum win sits at 5,000x, so there's serious upside on the table. You get a 5-reel grid running 40 paylines, all finished with a clean, modern look. Let's break down what works and what doesn't.
Written by Rachel Kim · Last updated: March 2026
Lock & Key is a slot game from Slot Factory. Presentation-wise it's built with crisp artwork and atmosphere, and it leans toward high variance at a published RTP of 94.02%. Under the hood you'll find a 5-reel grid running 40 paylines.
The mechanics are what make Lock & Key interesting. Look out for scatter symbols that unlock free spins and extra bonus rounds. The high volatility means patience is rewarded — expect quiet spells broken by bigger hits. All told, it's a solid entry in the Slot Factory catalogue.
The RTP of 94.02% 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.
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.
Lock & Key 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
Lock & Key by Slot Factory is a solid offering that delivers good entertainment value. The 94.02% RTP combined with high volatility creates a well-balanced gaming experience.