Reef Raider

Reef Raider

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Introduction to Reef Raider

Reef Raider is a 7-reel online slot developed by NetEnt, featuring cluster-based gameplay and an array of special features. The game uses the innovative Cluster Pays™ system, creating engaging ways to win as players interact with unique symbols and bonus mechanics. The minimum bet is £0.20 and the maximum bet is £4.00 per spin.

How to Play

  • Reef Raider is played on a 7-row, 7-reel grid, utilising the Cluster Pays™ mechanic.
  • Wins are awarded when 5 or more identical symbols appear connected either vertically or horizontally.
  • Symbols that do not touch each other do not form a cluster and pay separately.
  • The game can be played using either cash or coins, with the option to switch between these in the Game Settings.
  • To select your bet, choose your preferred coin or cash value using the Bet Settings button.
  • Your current available balance is displayed on screen.
  • All payouts and winning combinations follow the Paytable, which dynamically updates based on your selected bet value.
  • Multipliers can further increase winnings achieved through cluster wins.
  • Only the highest win per cluster is paid, with simultaneous wins from separate clusters added together.

Avalanche™ Feature

  • Rather than reels spinning, symbols fall into place on the grid.
  • Each cluster win triggers the Avalanche™ feature.
  • Winning symbols explode and disappear, allowing new symbols to cascade into the empty spaces.
  • Avalanches continue until no new winning clusters are formed.

Wild Coin and Clam Wild Symbols

  • When a winning cluster includes at least 3 medium or low win symbols, a Clam Wild symbol replaces one of the removed symbols before the next Avalanche.
  • Wild Coin symbols appear in both the main game and Free Spins when certain features activate, such as Random Wilds or Cannon Blast.
  • Clam Wild symbols and Wild Coin symbols substitute for all standard symbols except Multiplier symbols, helping to complete winning clusters.
  • If a Wild Coin or Clam Wild symbol is part of a winning cluster, it is removed along with the rest of the cluster during the Avalanche.
  • A single Wild Coin or Clam Wild may contribute to more than one cluster if clusters are adjacent.
  • Wilds only pay in combination with other symbols; they cannot form a winning cluster alone.

Multiplier Symbols

  • A Multiplier symbol placed horizontally or vertically adjacent to a winning cluster multiplies those winnings by its displayed value—either x2, x3, x5, or x50.
  • Multiplier symbols are not considered part of any cluster but can multiply several different wins at once if touching multiple clusters.
  • Only one Multiplier symbol may appear on the grid at any time.
  • Multiplier symbols disappear together with the winning cluster they are affecting.
  • In Free Spins, Multiplier symbols can land anywhere on the grid except on positions holding Mystery Overlay symbols.

Treasure Trail Meter

  • The Treasure Trail meter starts each round with 15 uncharged segments.
  • Every time a Clam Wild symbol is removed during a cluster win, one bar of the meter charges.
  • Each Clam Wild may only charge one bar, regardless of its participation in multiple clusters.
  • Reaching specific thresholds on the Treasure Trail unlocks the following:
    • 3 charged bars: Anchor Drop feature
    • 6 charged bars: Random Wilds feature
    • 9 charged bars: Mystery Chest feature
    • 12 charged bars: Cannon Blast feature
  • Unlocked features activate in sequence once all Avalanches for the round are finished.
  • The meter resets once all awarded features have played or no more Clam Wild symbols are part of cluster wins. Each new game round starts with a reset meter.

Anchor Drop Feature

  • Once triggered, 1 to 3 different low win symbols are randomly chosen and all instances of them are removed from the grid.
  • This then immediately triggers an Avalanche of new symbols.

Random Wilds Feature

  • When active, between 4 and 8 Wild Coin symbols are randomly placed onto the grid.
  • Wild Coin symbols cannot be positioned on top of Clam Wild or Multiplier symbols during this feature.

Mystery Chest Feature

  • Triggers the transformation of 2 to 16 medium or low win symbols on the grid into Mystery symbols.
  • All Mystery symbols are then revealed to become the same single type of medium or low win symbol, never a mix.
  • Mystery symbols may not replace Wild Coin, Clam Wild, or Multiplier symbols.

Cannon Blast Feature

  • This feature selects a random symbol on the grid, removing it along with every medium or low win symbol in its row and column.
  • Clam Wild, Wild Coin, and Multiplier symbols are not removed by this feature.
  • Some removed symbols may be replaced with Wild Coin symbols at random.
  • An Avalanche follows once the feature completes.

Free Spins and Mystery Overlay Feature

  • Charging 15 or more bars on the Treasure Trail meter during the main game awards Free Spins. For every additional 3 bars charged, 2 extra Free Spins are granted.
  • During Free Spins, 15 more charged bars award 1 additional Free Spin, with every additional 3 bars awarding one more.
  • All previously awarded features are played out before Free Spins begin, and any ongoing Avalanches finish before Free Spins start.
  • On entering Free Spins, the Mystery Overlay feature activates: 5 Mystery symbols appear at the centre and the adjacent positions of the grid, guaranteeing a cluster at the outset.
  • Revealed Mystery symbols always create a cluster of either medium or low win symbols, never a mixture.
  • The initial Mystery symbol cluster remains in position for all Free Spins. Additional Mystery symbols may be added on subsequent spins and, if adjacent, join the main cluster for the duration of Free Spins.
  • Free Spins are played at the same bet value as the spin that triggered them.
  • Free Spins end once the Free Spin count reaches zero, after which all total wins from Free Spins are added to any wins from the base round that began the Free Spin sequence.
  • The Treasure Trail meter is reset after Free Spins conclude.

General Game Information

  • Game settings and some features may be subject to the terms and conditions of the specific casino website, including:
    • Management of unfinished rounds
    • Session timeouts for inactivity
  • If a malfunction occurs with the game’s hardware or software, all affected bets are voided and refunded.

Return to Player

The Return to Player (RTP) information can be viewed within the game itself.

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*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this slot game are subject to change at any time. Game features mentioned may not be available in some jurisdictions.