Crystal Vault

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Rules and Gameplay

The Crystal Vault slot machine by Lightning Box offers an engaging gameplay experience set on a 5×3 grid with 25 fixed paylines. To start playing, users must select their bet size, which ranges from $0.30 to $90 per spin, catering to both casual players and high rollers. The game’s objective is to match symbols from left to right across the paylines to secure wins. Unique to Crystal Vault is the expansion of the playing field during free spins, allowing access to up to 75 paylines across three different reel sets, significantly increasing the chances of landing winning combinations.

Bonus Features

Crystal Vault is packed with captivating bonus features designed to enhance the gameplay and boost winning potential:

  • Free Spins Feature: Triggered by landing 3, 4, or 5 Crystal Scatters, rewarding players with 8 free spins. During this round, the playing field can expand, allowing access to additional reel sets and increasing the number of active paylines.
  • Multiplier Wilds: In the free spins round, Multiplier Wilds can appear, offering 2x and 3x multipliers to amplify wins. These can combine for up to a 27x win multiplier, leading to significant payouts.
  • Dinosaur Wilds: Acting as the game’s wild symbols, Dinosaur Wilds can substitute for other symbols to form winning combinations, appearing on the middle three reels.
  • Crystal Scatters: Landing enough of these symbols triggers the free spins round and can reset the free spins count while unlocking new reel sets.


The symbols in Crystal Vault are intricately designed, reflecting the game’s adventurous theme:

  • Low-Paying Symbols: Card ranks from Tens to Aces, offering smaller payouts.
  • High-Paying Symbols: Includes a variety of themed symbols such as planes, three animals, and female adventurers, with the latter paying the most.
  • Special Symbols:
    • Dinosaur Wilds: Substitute for other symbols to help form winning combinations.
    • Crystal Scatters: Trigger the free spins feature and can unlock additional reel sets.


Crystal Vault starts with 25 fixed paylines in the base game, ensuring a classic slot experience. The real excitement comes during the free spins rounds, where players can unlock up to three playing fields, increasing the total number of active paylines to 75. This unique feature significantly boosts players’ chances of landing winning combinations and achieving big wins, making every spin in Crystal Vault an adventure worth embarking on.

Pros & Cons

Pros Cons
Engaging adventure theme with high-quality graphics RTP below the industry average
Opportunity to win up to 81,885x the stake No progressive jackpot feature
Features such as Multiplier Wilds and Free Spins enhance gameplay Limited to two main features, which might not satisfy all players

Minimum and Maximum Bet

The betting range in Crystal Vault is designed to cater to a wide range of players. The minimum bet starts at $0.30, making it accessible for those looking to enjoy the game without risking a lot of money. On the higher end, players can wager up to $90 per spin, appealing to high rollers seeking bigger thrills and potential payouts. This flexible betting range ensures that Crystal Vault can be enjoyed by casual players and serious gamblers alike.

Game Jackpot

While Crystal Vault does not feature a traditional progressive jackpot, it compensates players with the possibility of winning up to 81,885 times their bet. This massive winning potential is one of the game’s most attractive features. The game operates with a Return to Player (RTP) rate ranging between 94.02% and 95.99%, depending on the gameplay options chosen. Coupled with its low volatility, Crystal Vault is designed to offer frequent wins, although these are generally smaller in size, maintaining a balance between risk and reward.

About Provider

Lightning Box is a seasoned player in the casino game development arena, known for delivering high-quality slots since 2004. As a pioneer in the iGaming industry, Lightning Box has carved a niche for itself by creating visually appealing slots that combine innovative gameplay with engaging themes. Their portfolio includes a diverse range of games designed to cater to various player preferences, underscoring their commitment to innovation, quality, and entertainment. Crystal Vault stands as a testament to Lightning Box’s expertise, showcasing their ability to blend captivating graphics with unique and rewarding game mechanics.

How To Play

  1. Visit a casino that offers the Crystal Vault slot and load the game in your browser.
  2. Adjust the game settings to your preference, including sound levels and speed of play.
  3. Check the paytable and rules for detailed information on payouts, special symbols, and features.
  4. Set your bet amount using the controls, with options ranging from $0.30 to $90 per spin.
  5. Press the spin button to start the game. Alternatively, use the autospin feature to set a predetermined number of spins, complete with win and loss limits for responsible gaming.
  6. Watch for special symbols like Dinosaur Wilds and Crystal Scatters to trigger bonus features for additional chances to win.


Crystal Vault by Lightning Box is an exemplary slot that manages to strike a fine balance between entertaining gameplay and the potential for significant payouts. Its adventurous theme, combined with stunning visuals and the chance to win big, make it a must-try for slot enthusiasts. Despite the absence of a progressive jackpot and a slightly below-average RTP, the game’s engaging features and the potential for up to 81,885x wins ensure a thrilling experience. Whether you’re a seasoned player or new to online slots, Crystal Vault offers a compelling gaming experience that’s hard to pass up.