Welcome to our deep dive on Open Vault — the demo, the maths, and whether it earns a spot in your rotation. Fa Chai are the studio behind it, tuning the slot game for a medium high volatility profile, with 96.36% RTP. Top wins are capped at 5,000x your stake, a healthy ceiling worth chasing. It's leaning into an arabian aesthetic and plays out on a 5-reel grid running 20 paylines. So does it deliver? Let's get into it.
Written by Emma Roberts · Last updated: January 2026
At its core, Open Vault is a slot game produced by Fa Chai, themed around arabian. It runs on 5 reels and 20 paylines with a medium high volatility profile, and 96.36% RTP.
Dig into the bonuses and Open Vault starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. Its medium high variance balances steady wins with the odd larger payout. Overall it's a well-rounded slot game that knows what it is.
The RTP of 96.36% is right around the industry average of ~96%. This represents a fair return that's in line with what most modern slots offer.
Medium-high volatility means wins come less frequently but tend to be larger when they hit. Players should be prepared for dry spells between bigger wins, requiring a moderate bankroll.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Open Vault 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
Open Vault by Fa Chai is a solid offering that delivers good entertainment value. The 96.36% RTP combined with medium high volatility creates a well-balanced gaming experience.