Open Vault

Open Vault review

The Open Vault demo on this page lets you play Fa Chai's treasure vault slot for free with virtual credits. Try the Open Vault demo to see how the treasure chests and the increasing multipliers work before you decide whether to play for real money. Demo results are for practice only and do not predict real-money outcomes.

Features & bonus round

• Key specs:
• Provider: FA CHAI Gaming
• RTP: 96.5%
• Volatility: High
• Max Multiplier: 10,000x
• Paylines: Megaways
• Pay Type: Megaways
• Mechanics: Treasure chests connect with any symbol and reveal a random symbol, Increasing Multiplier
• Features: Free Game with non-resetting chest multipliers, Multiplier Symbol, Progressive Jackpot
• Theme: Treasure vault
• Release Date: 2026-02-11
• Bonus Buy: Yes (Buy Feature)
• Exotic vault full of hidden treasure; Fa Chai lists the payline type as Megaways
• Treasure chests connect with any symbol to help form wins and then reveal a random symbol
• Winning connections boost the multipliers (Increasing Multiplier and Multiplier Symbol features)
• Free Game: chest multipliers are assigned at random at the start and carry on through the feature without resetting
• The game page also lists a Progressive Jackpot and a Buy Feature; Fa Chai gives a 96.5% RTP, high volatility and a max multiplier of 10,000x

Open Vault suits players who like high-volatility slots where multipliers build up during a round. Try the free demo first to see how the chests and multipliers behave, and set a budget before playing for real money.