Mega Mr Monster

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Rules and Gameplay

Mega Mr Monster is a visually engaging slot game developed by Slot Factory, known for its cartoonish theme inspired by the classic Frankenstein novel and elements reminiscent of The Addams Family. The game is structured around a 5-reel, 3-row format with 9 fixed paylines, ensuring that the winning combinations pay from left to right, beginning from the first column. Emphasizing simplicity, the game offers a seamless gaming experience across both desktop and mobile platforms, without the addition of complex technical features, save for a basic Autoplay option. This approach caters to both novice and seasoned players looking for straightforward gameplay.

Bonus Features

Mega Mr Monster enriches the playing experience with its bonus features, primarily focusing on the Free Spins round. Here’s a detailed look at what players can expect:

  • Free Spins: Activated when scatter symbols land on reels 2, 3, and 4, granting players 5 free spins. This feature can be retriggered an unlimited number of times, further enhancing winning opportunities.
  • Plus Spin Symbol: During free spins, this special symbol can appear, adding extra free spins to the tally and prolonging the bonus round.
  • Banner Wilds: Regular wilds transform into Banner Wilds during free spins, expanding to cover entire reels and significantly boosting the chances of landing winning combinations.

These features, especially the transformation of wilds and the potential for unlimited free spins, add an exciting dimension to the game, promising more than just the simplistic gameplay it starts with.


The symbols in Mega Mr Monster are a blend of thematic characters and traditional card royalties, each with their own payout values. Here’s a closer look:

  • Wild Monster: Acts as a substitute for other symbols to form winning combinations. Also offers its own payouts for combinations of 3, 4, or 5 symbols.
  • Crazy Scientist and Hunchbacked Assistant: High-value symbols offering generous payouts.
  • Brain and Bolt in Jars: Other thematic symbols with significant payout values.
  • Card Royalties (Ace, King, Queen, Jack): Represent the lower-value symbols in the game.


Mega Mr Monster operates on a fixed payline structure, offering 9 ways to win. These paylines are immutable and payout for combinations of symbols appearing from left to right, starting from the first reel. This straightforward system ensures that players can easily understand and follow the game’s winning combinations without the need for adjustable paylines.

Pros & Cons

Pros Cons
100% Mobile Compatible No Bonus Features outside Free Spins
Infinite Autoplay option No Quickspin and Turbo Spin
Low to Medium Volatility

Minimum and Maximum Bet

The game offers a betting range that caters to a wide array of players, starting from a minimum bet of $0.09 to a maximum of $45 per spin. This flexible betting range allows both low-stakes players and high-rollers to enjoy the game according to their individual preferences and bankroll sizes.

Game Jackpot

While Mega Mr Monster does not explicitly mention a game jackpot, it operates with a variable RTP rate of 96.02% or 94.11%, and showcases a low to medium volatility. This setup suggests a gameplay experience that balances the frequency and size of wins, ensuring that players can anticipate a fair chance at achieving substantial payouts, even in the absence of a traditional jackpot.

About Provider

Slot Factory stands out as a comprehensive game design and development powerhouse, not only focusing on crafting engaging slot games but also offering full back-office support, white label platforms, and technical and marketing support. Operating from Halesowen, England, its team boasts over 20 years of combined experience in the i-Gaming industry. Slot Factory’s commitment to diversity in game themes and styles, alongside its meticulous attention to game fairness and player experience, marks its prominence in the digital casino domain.

How To Play

  1. Select your betting amount, ranging from $0.09 to $45 per spin, to suit your bankroll.
  2. Explore the game’s paytable to understand the value of each symbol and the game’s rules.
  3. Use the Autoplay feature for a predetermined number of spins at the same bet value, or manually spin each round.
  4. Aim to land three or more matching symbols on any of the 9 fixed paylines, starting from the leftmost reel, to score a win.
  5. Watch for the Free Spins scatters on reels 2, 3, and 4 to trigger the Free Spins bonus round for additional win chances.
  6. During Free Spins, keep an eye out for the Plus Spin symbol to add extra spins to your tally and the Banner Wilds that expand to cover entire reels.


Mega Mr Monster by Slot Factory leverages a unique Science theme inspired by the Frankenstein novel, coupled with a nostalgic nod to The Addams Family, to deliver a visually appealing and engaging slot experience. Its simplicity in design, complemented by the potential for extended play through free spins and special wild symbols, caters to a wide range of players. Despite its limitations, such as the absence of additional bonus features and the undisclosed maximum win, the game’s mobile compatibility and adjustable betting range affirm its appeal in the competitive online slot market.