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Game Overview

Alien Invaders is a high volatility slot game played on a grid of 5 vertical reels, each displaying 3, 4, or 5 symbols randomly during each spin. The lowest row on the grid is always marked. Wins occur when three or more symbols of the same type appear on the bottom (marked) row across any number of consecutive reels. When this condition is met, those reels become active, and all symbols that match across the active reels count towards win combinations.

Symbols and Payouts

• Orange Monster: £2.00 per symbol in the winning combination
• Blue Monster: £1.00 per symbol in the winning combination
• Green Monster: £0.50 per symbol in the winning combination
• Yellow Monster: £0.50 per symbol in the winning combination
• Red ‘A’ Symbol: £0.20 per symbol in the winning combination
• Green ‘K’ Symbol: £0.10 per symbol in the winning combination
• Blue ‘Q’ Symbol: £0.10 per symbol in the winning combination
• Yellow ‘J’ Symbol: £0.10 per symbol in the winning combination
• Pink ‘10’ Symbol: £0.10 per symbol in the winning combination
  
  

Tumble Feature

After every spin, winning combinations are paid and all winning symbols disappear. Symbols above fall into the empty spaces, and new symbols fill remaining positions from above. Tumbling continues until no further winning combinations are possible. All resulting wins are added to the player’s balance after all tumbles have completed.

Wild Symbol

• The Wild symbol substitutes for all symbols except Scatter and can appear on reel 3 during the base game and on reels 2, 3, and 4 during Free Spins.
• The Wild is inactive unless it reaches the bottom marked row, and then may apply a random multiplier (1x, 2x, 3x, 5x, 10x, 25x).
• Wild symbol payout: 3 Wilds – £0.30, 2 Wilds – £0.20, 1 Wild – £0.10.
  
  

Scatter Symbol

• The Scatter symbol can appear on all reels.
• When a Scatter reaches the bottom marked row, it explodes along with all immediately adjacent symbols (horizontal, vertical, diagonal). All symbols that explode this way pay according to the paytable.
  
  

Win Multiplier Feature

• Every spin starts with a 1x win multiplier.
• For every 10 symbols that explode during tumbles or are destroyed by a Scatter, or for every Scatter reaching the bottom row, the multiplier increases by 1x.
• Wild multipliers add to the win multiplier when the Wild reaches the bottom marked row.
• The current multiplier applies to each winning combination as it happens.
  
  

Free Spins

• 3 or more Scatter symbols across a base game spin (including all resulting tumbles) award 7 free spins and an additional 3 free spins for each Scatter beyond the third.
• Reel sizes during Free Spins always start at 3 symbols per reel and may randomly increase by 1 symbol (up to 5) on a random reel after every spin, remaining that size until Free Spins end.
• All win multiplier increases during Free Spins persist throughout the feature.
• Each Scatter that reaches the bottom row during Free Spins awards 1 additional free spin.
• Wild symbols in Free Spins may carry a random multiplier up to 100x. Special reels are used during Free Spins.
  
  

Maximum Win

• The maximum possible win is limited to 5,000 times the bet. If this is reached during Free Spins, the round ends immediately, and the win is paid out.
  
  

Ante Bet

• Players may choose to increase the bet multiplier to 25x per line. With the Ante Bet active, the chance of hitting Scatter symbols is doubled.
  
  

Additional Game Rules

• Only the highest win per winning combination is paid.
• Wins from multiple combinations are added together.
• All wins are multiplied by the base bet and displayed in coins.
• Free Spins round win is paid after round completion and includes all cycle wins.
• The theoretical RTP (Return to Player) is 92.01%. Using the Ante Bet sets the RTP to 92.00%.
• Minimum bet is £0.20; maximum bet is £2.00.
• Malfunction voids all pays and plays.
  
  

Volatility

Alien Invaders is classified as a high volatility slot. High volatility means wins occur less frequently, but potential winnings can be larger in a short span.