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Invading Vegas Revenge on Mars Slot Features and Mechanics

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pembroke Updated: 07.05.2025 20:37
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Play’n GO presents “Invading Vegas: Revenge on Mars,” a game continuing the story started in 2023 when an alien army sought to take Earth. As in the first part, they oddly selected the world’s gambling center as their landing spot. Perhaps they thought it was the least defended place? Or did they want to sample games after handling humanity? Regardless, their desire was not met, and they came back. Now, a third attempt looks possible as they begin a new assault. This time, we are much better prepared. A bionic fighter, selected from the best, will stand against the aliens and try to end them for good. Grab your laser weapon and join this journey for revenge to free the world, become a hero, and get large rewards, up to 2500 times the bet. Learn more about this slot.

View of the 5x3 base game against a Las Vegas background, with a pending sequence on the grid.
Base Game

“Invading Vegas: Revenge on Mars” is a video game by Play’n GO with 5 reels, 3 rows, and up to 20 win lines. Players pick bets from 0.1 to 50. The game offers a standard return rate of 96.20%. Operators can use lower rates: 94.20%, 91.20%, 87.20%, 84.20%. It has medium volatility. The biggest prize is 2500 times the bet. The alien force is large, but players have helpers to even the fight and win big. For details on performance and features, check the game’s slot rating.

The familiar Las Vegas sight is different. The buildings seem the same, but the spot is wrong – Earth hangs in a purple sky. The aliens seem to have taken main Strip sights and made their own game place. The neon cowboy, Statue of Liberty, and Eiffel Tower are here. Swing music plays in the background, setting a mood away from the idea of revenge. This changes when our hero appears on the reels, taking down the invaders. Wins need 3-5 matching symbols on active win lines. Payouts start from the leftmost reel and go right along neighboring columns. This other Vegas works on most current devices, from desktops to phones and tablets. Ready to play slot games? Symbols with lower payouts are casino chips with alien designs in various colors: purple, blue, green, and red. All pay 0.8x the bet for a group of 5. Symbols with higher payouts show figures looking like Earth performers. Prizes for 5 same symbols on a line range from 1.6x to 6.4x the bet. Besides standard symbols, the reels also show a Scatter (spaceship), Mystery symbols (cubes), and a Walking Wild (Space Cowboy).

The alien army may be many, but players need only a few aids to balance the odds and fight for big wins. Functions available include Walking Wilds with Respin, Mystery Symbols, and Free Spins.

The Walking Wild Re-Spin feature is active in the main game. A full Wild symbol on the 4th reel and 3 Mystery symbols on the game grid.
Walking Wild Re-Spin feature active. Full Wild on reel 4 and 3 Mystery symbols.

Walking Wild Re-Spin

This function starts when the first two or last two reels are full of same symbols, but no win forms. In this case, a full walking wild shows up on the middle reel, starting a respin. During the new spin, it moves left (if the stacks were on the first two reels) or right (if on the last two). It puts 3 to 12 mystery symbols in random spots, never on its current reel. This keeps going until the walking wild gets to the edge.

Mystery Symbols

Cube symbols with a question mark can change into either standard pay symbols or Wilds with multipliers of x2, x3, x5, or x10. Any wins that use these Wilds will get the payout boost. If a win line includes several multipliers, their values add up.

Free Spins

When 3 Scatter symbols land in one spin, the bonus round with 12 free spins starts. The Walking Wild Re-Spin function works as it does in the main game. During this round, symbols with higher payouts can stack on reels 1 and 2, unlike the main game where they are only on reels 4 and 5. Landing 3 Scatter symbols again gives 12 more free spins, up to 120 total.

F.A.Q.

What is "Invading Vegas: Revenge on Mars" about?

Invading Vegas: Revenge on Mars is a thrilling video slot game from Play'n GO that continues an epic intergalactic saga. It follows the story started in a previous game where an alien force attempted to take over Earth, specifically targeting Las Vegas. After their initial failure, the aliens are back for a third attempt. However, humanity is now much better prepared. The game focuses on the battle against these invaders, featuring a skilled bionic fighter selected to stand against them. Players join this fighter on a mission to free the world from the alien threat, exact revenge, and potentially earn significant rewards, with a maximum win potential of up to 2500 times the bet. It's a narrative-driven slot experience blending sci-fi action with the iconic backdrop of Las Vegas.

What are the key technical specifications of the "Invading Vegas: Revenge on Mars" slot?

This Play'n GO video slot is structured around a standard 5-reel, 3-row grid. It offers players the opportunity to win across up to 20 adjustable win lines. Betting options are quite flexible, ranging from a minimum of 0.1 units to a maximum of 50 units per spin. The game features a standard Return to Player (RTP) rate of 96.20%, though operators have the option to set lower rates including 94.20%, 91.20%, 87.20%, and 84.20%. It is classified as having medium volatility, which suggests a balance between the frequency and size of wins compared to high or low volatility slots. The highest possible payout a player can achieve in this game is 2500 times their initial bet.

How does the Walking Wild Re-Spin feature work in this game?

The Walking Wild Re-Spin feature in "Invading Vegas: Revenge on Mars" is a unique mechanic triggered under specific conditions during the base game. It activates when the first two reels are completely filled with matching symbols, or when the last two reels are completely filled with matching symbols, but crucially, no winning combination is formed by these stacked symbols. When this occurs, a full Walking Wild symbol, depicted as the Space Cowboy, appears on the middle reel (reel 3). This event initiates a respin. During the respin, the Walking Wild moves one reel to the left if the triggering stacks were on the first two reels, or one reel to the right if they were on the last two. Simultaneously, between 3 and 12 Mystery Symbols are randomly placed on the grid, excluding the reel the Walking Wild currently occupies. This process continues with subsequent respins until the Walking Wild reaches the edge of the reel grid and walks off.

What are Mystery Symbols and how do they benefit players?

Mystery Symbols in "Invading Vegas: Revenge on Mars" are depicted as cubes adorned with a question mark, adding an element of surprise to the gameplay. These symbols have the special ability to transform into other symbols on the reels. Specifically, they can reveal themselves as any of the standard pay symbols present in the game. More excitingly, they can also transform into Wild symbols that come equipped with multipliers. These multipliers can have values of x2, x3, x5, or even x10. If a winning combination is formed using a Wild symbol that originated from a Mystery Symbol and carries a multiplier, the payout for that win is boosted by the corresponding multiplier value. A particularly advantageous aspect is that if a single winning line includes multiple Wild symbols with multipliers, their multiplier values are added together before being applied to the win, potentially leading to much larger payouts.

How do I trigger the Free Spins bonus round?

The Free Spins bonus round in "Invading Vegas: Revenge on Mars" provides a significant opportunity for increased winnings and is a key feature players aim to unlock. This bonus round is triggered by landing a specific number of Scatter symbols anywhere on the reels during a single base game spin. The Scatter symbol in this game is represented by the alien spaceship icon. To activate the Free Spins feature, you need to land three Scatter symbols simultaneously on the reels. Successfully landing 3 Scatters will immediately award you with a set of 12 free spins to begin the bonus round. This feature is a central part of the game's appeal, offering extended play without using your bet balance and enhanced winning potential through its modified gameplay mechanics.

What happens during the Free Spins feature in "Invading Vegas: Revenge on Mars"?

Once the Free Spins feature is triggered with 12 spins, the gameplay dynamics are slightly altered to offer enhanced winning opportunities. The popular Walking Wild Re-Spin function remains active during the Free Spins round, operating in the same manner as it does in the base game, with the Space Cowboy Wild moving across the reels and adding Mystery Symbols. A notable difference in the Free Spins is how the higher-paying symbols can appear; unlike the base game where they primarily stack on reels 4 and 5, during Free Spins, these valuable symbols gain the ability to stack on reels 1 and 2 as well, potentially making it easier to form high-paying combinations from the left side of the grid. Furthermore, the Free Spins feature can be re-triggered. Landing another 3 Scatter symbols during the bonus round will award an additional 12 free spins, and this can continue up to a maximum total of 120 free spins, prolonging the exciting bonus phase significantly.
Experts
Julian Pembroke
Julian Pembroke is a Birmingham-based correspondent specializing in gambling technology and innovation. His articles explore the intersection of gaming software developments and player experience. Known for his accessible explanations of complex gambling concepts, Julian's work bridges the gap between industry insiders and casual readers.
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