Developer 
Features Crystal Vault is a 5-reel slot from Lightning Box with a 25-line base game and the option of expanded reel screens during its bonus feature. The game uses a low-volatility format and offers bets from 0.3 to 37.5, with RTP figures listed at 94.02% and 95.99%. The top prize is recorded at 2,729x stake.
Its main feature is Bonus Respins. Landing 3 or more scatter symbols triggers the round with 8 respins. When 2 scatters land during the feature, Reel Screen 2 unlocks and the respins reset to 8. A further 2 scatters unlock Reel Screen 3, increasing the reel array and opening up 2x and 3x wild multipliers across the bonus game.
This demo version lets players play for free and practice before playing for real money, while seeing how the respins, scatters and wild multipliers work in Crystal Vault. The slot was released in October 2022 for the UK and EU markets.
