Welcome Offer
18+ new players only. First deposit offer: Deposit & wager £20 on Big Bass Splash for 20 spins. Wagering must be completed within 7 days of deposit. Spins awarded on Big Bass Splash. 0x wagering on winnings. www.begambleaware.org Full T&Cs apply.
Holy Moo! Extreme Power

Play Holy Moo! Extreme Power online slot for real money online at 666 Casino

*Any values mentioned are subject to change.

About Holy Moo! Extreme Power

Holy Moo! Extreme Power is an online slot provided by Play’n GO. The game features a 6×6 grid and is played with cascading symbols. Bets start from £0.10 and can be set up to £5.00. The game can be accessed on a variety of devices.

Game Structure and Gameplay

Holy Moo! Extreme Power uses a cascading cluster mechanism. Symbols drop into the 6×6 grid and wins are achieved by forming clusters of 5 or more matching symbols that are connected vertically or horizontally without gaps. Once a winning cluster is formed, the winning symbols are removed and new symbols fall into the empty positions, potentially creating more winning combinations. This process repeats until no new wins are formed in the round. The rules and paytable within the game provide further details on symbol payouts and cluster wins.

Symbols and Special Features

  • WILD Symbol: The WILD symbol can substitute for any other symbol, except for SCATTER, SUPER SCATTER, COLLECTOR and special reward symbols created during BOVINE MOO-MENT (CASH SYMBOLS). WILDs help in forming cluster wins and can be involved in multiple combinations during a single spin.
  • BOVINE FRAMES: When a winning cluster is formed, the positions involved are marked with BOVINE FRAMES. These frames remain active for the current spin, including all subsequent cascades. If a COLLECTOR SYMBOL does not appear before the spin ends, the frames are cleared for the next spin.
  • COLLECTOR SYMBOL (MOO-IGHTY ZEUS): This symbol may land during a spin. Only one COLLECTOR type may appear per spin. When a COLLECTOR SYMBOL lands while BOVINE FRAMES are present, the BOVINE MOO-MENT feature is triggered.

BOVINE MOO-MENT Feature

When a COLLECTOR SYMBOL lands and BOVINE FRAMES are present, each frame transforms into a CASH SYMBOL with a set value. These values can be 0.5x, 1x, 2x, 5x, or 10x the total bet. All values from CASH SYMBOLS are added together and multiplied by the total bet to calculate the feature win. If more than one COLLECTOR SYMBOL is active in a single cascade, the collected value is awarded for each COLLECTOR. Multiply Forms can boost certain CASH SYMBOL values by multiplying them up to x2, x3, x4, and so on.

BOVINE PATH and Collector Progression

Every base game appearance of the COLLECTOR SYMBOL advances progress on the BOVINE PATH. As you progress, new COLLECTOR SYMBOL types are unlocked. At higher BOVINE PATH levels, COLLECTOR SYMBOLS land less frequently, and the odds of triggering the MOO-IGHTY ZEUS instant prize adjust accordingly. This ensures a consistent return to player regardless of BOVINE PATH stage.

ZEUS Power Manifestation and Instant Prizes

The MOO-IGHTY ZEUS character is shown beside the reels. When a COLLECTOR SYMBOL lands, it helps to charge ZEUS with power. The appearance of COLLECTOR SYMBOLS may randomly award an instant prize. Instant prizes include MINI (20x), MAJOR (50x), MEGA (100x), and GRAND (1000x) the total bet. Only the MINI prize is available at first, while the others unlock upon reaching the final BOVINE PATH stage. This random prize feature is not available during the FREE SPINS feature.

Free Spins and Olympian Spins Modes

The FREE SPINS feature starts when SCATTER SYMBOLS land on the grid. If one of these is a SUPER SCATTER, the feature is activated as OLYMPIAN SPINS. Both modes grant 6 spins. During FREE SPINS, BOVINE FRAMES remain on the grid between spins and only clear when a COLLECTOR SYMBOL lands. In OLYMPIAN SPINS, BOVINE FRAMES persist throughout the entire feature. Free Spins use cascading wins as in the main game and cannot be retriggered.

How to Play

  1. Use the bet buttons, or adjust with plus and minus symbols, to set your desired bet between £0.10 and £5.00.
  2. Press the SPIN button (or use the spacebar) to start a round with your selected bet.
  3. Symbols will land on a 6×6 grid. Watch for clusters of 5 or more matching symbols horizontally or vertically, as these award cluster wins according to the paytable.
  4. Winning symbols are removed, and new symbols cascade down to fill the empty positions, potentially creating more wins.
  5. If special symbols trigger features, these play out automatically according to the rules described above.

Bet Adjustment and Paytable Access

  • Change Your Bet: Select any of the five available bet amounts, or step bet values up or down with plus or minus buttons.
  • Paytable: Access detailed payout and symbol information through the paytable.
  • Start Spin: Begin a new game round with the current bet by selecting SPIN or pressing the spacebar.
  • Auto Adjust Bet: If your balance is too low for your selected bet, the system will automatically reduce your bet to the highest amount your balance allows. Bets are only lowered in this way and will not automatically increase again.

Game Round Information

  • All game round and bet details are saved if play is disrupted. Unfinished rounds can be resumed when you reopen the game.
  • Unresolved, undecided bets from incomplete games expire after 7 days.
  • Any collected items or progress will be cleared after 180 days unless you log into any Play’n GO game within that time.
  • Malfunctions will void all pays and plays.

Further Details

  • All wins from clusters, features, bonus games, and scatters are combined at the end of each game round.
  • Winning combinations pay when connected symbols are adjacent horizontally or vertically.
  • Cluster wins can start from any point on the grid, but only the highest win per winning combination is paid out.
  • Feature and bonus game winnings are added to other round winnings.
  • The in-game rules and paytable provide more information on symbol payouts and special features.

Return to Player

The return to player (RTP) value for Holy Moo! Extreme Power is available for review within the game.


Holy Moo! Extreme Power Demo Play

If you’re curious about Holy Moo! Extreme Power demo play or exploring this slot for the first time, you’ve come to the right place. Although we don’t offer access to demo play, this page highlights everything you need to know, based on the official help and feature information.

Discover how the main elements of the game work, including bonus symbols and payout structures, just as you would in a standard demo mode.

Whether you’re reviewing the gameplay mechanics before wagering real money or simply comparing Holy Moo! Extreme Power with other online slots, the detailed breakdown here offers a close simulation of how it feels to play for free.

*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.