Power Zones: Thunder Birds

8-reel, cluster game with collapsing reels

To play the game:

  • The entry screen displays the game’s features.
  • On the entry screen, press the ► button to enter the main game.
  • Press - or + beside TOTAL BET to choose the total bet.
  • Press the SPIN button to spin the reels with the current bet.
  • In the case of a winning spin, the WIN field displays the accumulating winnings.
  • Wins are calculated according to the paytable.
  • 5 or more matching symbols vertically and\or horizontally adjacent anywhere form a win. Winning symbols are removed after they pay out causing symbols above them to drop and new symbols to fall from above.
  • Wins are multiplied by the coin bet. The coin bet is the total bet / 10.
  • The BONUS symbol is an exception to these rules.


  • The reels are spun automatically in autoplay.
  • To display the list of options, press the button with a ► and an arrow around it, and select the number of spins to be played automatically.
  • During autoplay, the number of remaining spins is displayed.
  • Autoplay ends when:
    • The reels have spun the number of times specified.
    • You do not have sufficient funds for the next spin.
    • A feature has been triggered.
  • You can end autoplay by pressing .


  • To open the paytable, press the i button.
  • To navigate the paytable, scroll up or down, or swipe the screen.
  • To close the reference pages and return to the game, press the back-arrow button.

Maximum win limit:

  • The maximum win in the game has an upper limit. For more information, see the Terms and Conditions.

Bonus Symbol:

  • The egg symbol showing 'BONUS' is the BONUS symbol in the game.
  • The BONUS symbol appears on all reels during the main game and Free Games.
  • When 4 or more BONUS symbols land anywhere on the reels, the Free Games feature is triggered.

Multiplier Symbol:

  • The chicken symbol holding a sign is the MULTIPLIER symbol in the game.
  • The MULTIPLIER symbol can land anywhere on the reels to multiply the win by the value shown.
  • Multiplier values are additive.
  • The MULTIPLIER symbol appears only during Free Games.

Power Zones™ and Meter:

  • At the start of every spin, there are 16 Power Zones™ on the centre of the reels.
  • Each win fries a bird and adds 1 drumstick to the meter beside the reels.
  • The drumsticks in the meter are cleared on every new spin.
  • Every 4 drumsticks increase the number on the meter by 1.
  • If a number is on the meter when the reels stop collapsing, a symbol is revealed, and the number on the meter decreases by 1.
  • If the revealed symbol is on a position without a Power Zone™, a Power Zone™ forms on that position. If this position is adjacent to an existing Power Zone™, the existing Power Zone™ expands to include it.
  • If the revealed symbol is in a Power Zone™, every position inside the zone transforms into that symbol.
  • If there is no number on the meter when the reels stop collapsing, the spin ends, any drumsticks in the meter disappear, and the number of Power Zones™ on the reels reset to 16.

Free Games:

  • When 4 or more BONUS symbols land anywhere on the reels, the Free Games feature is triggered.
  • More BONUS symbols trigger more Free Games.
    • 4 BONUS symbols trigger 8 Free Games.
    • 5 BONUS symbols trigger 9 Free Games.
    • 6 BONUS symbols trigger 10 Free Games.
    • 7 BONUS symbols trigger 11 Free Games.
    • 8 or more BONUS symbols trigger 12 Free Games.
  • When the feature starts, the number of Power Zones™ on the reels reset to 16.
  • During Free Games, a MULTIPLIER symbol can land anywhere on the reels and multiply the win by up to 100x.
  • The multiplier values that can appear on a MULTIPLIER symbol are 2x, 3x, 4x, 5x, 10x, 20x, 25x, 30x, 50x and 100x.
  • At the end of Free Games, a pop-up message appears showing the results. Press the OK button to continue.

Return to Player:

  • The theoretical percentage return to player (RTP) is 95.05%.

Note on disconnections:

  • If you are disconnected from the Internet during:
    • A spin, the reels will display the result after you reconnect and any winnings will be added to your balance.
    • A bonus feature or the triggering spin, you will be automatically directed to the feature after you reconnect.
  • Autoplay, the spin will be automatically completed, but further spins will not automatically commence.
  • To see the outcome of your previous round after you log back into the portal, press the game history icon on the bottom toolbar.

Malfunction voids all pays and plays.

Last modification date: 12/16/2021