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Play’n GO · Slot Review

Invading Vegas Revenge on Mars — Full Review & Free Demo

3.3/5
Play for Real →
RTP
96.20%
Volatility
Average
Max Win
2,500x
Provider
Reels
5
Paylines
20
Bet Range ($,€,£)
0.10 - 50
Rating
3.3/5
Released
Feb 2025

Invading Vegas Revenge on Mars: Slot Overview

Invading Vegas Revenge on Mars is the third alien-themed instalment from Play'n GO, and this time the humans are fighting back. Built on a 5x3 grid with 20 paylines, it runs at medium volatility with an RTP of 96.20% and a max win of 2,500x. Bets range from 0.10 up to 50 per spin.

So the storyline goes: after aliens trashed Vegas twice (in Invading Vegas and Invading Vegas Las Christmas), a bionic cowboy heads to Mars for revenge. Visually it looks proper smart, with neon lights and a dusty Martian skyline. The main features are Walking Wild Re-Spins, Mystery Symbols, and Free Spins. Fair enough as a feature set, though I would have liked something new thrown in.

Symbols and Paytable

Low pays are four casino chips with alien symbols on them, purple, blue, green, and red. All four pay the same: 0.8x your bet for five of a kind, so nothing exciting there. Premium symbols are five alien characters that look a bit like off-world showbiz personalities. Matching five premiums pays between 1.6x and 6.4x the bet, depending on which character you land.

Wilds show up as a Space Cowboy and pay a decent 30x for five across a line. There is also a space car scatter that triggers the bonus round, plus cube-shaped mystery symbols that pop in during the walking wild feature. Not a massive paytable, but the mystery symbols and multiplier wilds do the heavy lifting when things click.

Symbol Payouts

icon 1
5x6.4
4x4
3x2
icon 2
5x3.2
4x1.6
3x0.8
icon 3
5x3.2
4x1.6
3x0.8
icon 4
5x1.6
4x0.8
3x0.4
icon 5
5x1.6
4x0.8
3x0.4
icon 6
5x0.8
4x0.4
3x0.2
icon 7
5x0.8
4x0.4
3x0.2
icon 8
5x0.8
4x0.4
3x0.2
icon 9
5x0.8
4x0.4
3x0.2
icon 10
Wild
5x30
4x10
3x5
icon 11
Scatter

Bonus Features Breakdown

Right, the big draw here is the Walking Wild Re-Spin. If the two leftmost or two rightmost reels fill with matching symbols but no win lands, a stacked walking wild appears on the middle reel. It then shifts one reel at a time towards the opposite edge, dropping 3 to 12 Mystery Symbols each respin. Those mystery cubes reveal either regular pay symbols or wilds carrying multipliers of x2, x3, x5, or x10. If more than one multiplier sits on the same payline, the values add together before being applied. That is where the bigger hits come from.

Key change from the earlier games: the walking wild can now move left or right depending on which side triggered it. Previously it only went one direction in the base game. Makes the respins feel a bit less random and more satisfying, honestly.

Landing 3 scatters triggers 12 Free Spins. During free spins, stacked high-pay symbols can appear on reels 1 and 2 as well as 4 and 5, compared to just the rightmost pair in the base game. You can retrigger with another 3 scatters for +12 spins each time, up to 120 total. The walking wild mechanic works identically in the bonus round.

Bonus Buy Options

Bonus Buy Walking Wild Re-Spin
Walking Wild Re-Spin
Full stack of matching symbols on the two leftmost or rightmost reels without a win triggers a walking wild on the middle reel. The wild moves one reel per respin, dropping 3 to 12 mystery symbols. Continues until it reaches the edge reel, then grants one extra respin.
Bonus Buy Mystery Symbols
Mystery Symbols
Cube-shaped symbols placed by the walking wild that reveal either a regular pay symbol or a wild carrying a multiplier of x2, x3, x5, or x10. Multiple multipliers on the same payline add together.
Bonus Buy Free Spins
Free Spins
3 scatter symbols trigger 12 free spins. High-pay stacks can now appear on reels 1 and 2 as well as 4 and 5. Retriggerable with 3 scatters for +12 spins, up to 120 maximum.

Volatility, RTP, and Max Win

Medium volatility suits a relaxed session. You get wins often enough to keep your balance ticking along without massive droughts. RTP tops out at 96.20%, but operators can pick lower settings down to 84.20%, so always check what the casino you are playing at is running. A bit annoying that such a wide range exists, but that is standard for Play'n GO these days.

Max win is 2,500x. I will be honest, that is on the low end and it is the same cap as the first two games in this series. For a medium-volatility slot it is not terrible, but if you are chasing big numbers you will probably find this underwhelming. It does mean sessions stay fairly steady, though, which is fine for casual play.

Ryan Cole’s Verdict

Final Verdict

Invading Vegas Revenge on Mars looks great. Proper vibrant animations, a fun sci-fi theme, and the reel area lights up nicely when features hit. Play'n GO clearly know what they are doing on the visual side. The walking wild moving both ways is a welcome tweak, and the mystery multiplier wilds can produce some decent moments.

My gripe is that it still feels very similar to the two previous Invading Vegas slots. Same max win, same core mechanics, same overall flow. If you already played the originals and felt lukewarm, this probably will not change your mind. But if the alien Vegas theme tickles you and you want a medium-volatility spinner for a chilled evening, it does the job. Just do not expect fireworks from that 2,500x ceiling.
3.3
★★★☆☆
out of 5
✓ Pros
Walking wilds now move in both directions
Mystery symbols can carry x2 to x10 multipliers
Decent 96.20% RTP at top setting
Slick animations and vibrant alien theme
Free spins retriggerable up to 120 total
✗ Cons
Max win capped at a low 2,500x
Very similar mechanics to previous two games
Base game can feel a bit flat
Lower RTP variants available to operators
Ryan Cole
Ryan Cole
Lead Casino Slots Analyst
5+ years analysing online slots for the UK market. Every game is played for a minimum of 500 demo spins before publication. No affiliate bias — ever.
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Invading Vegas Revenge on Mars FAQ
How does the Walking Wild Re-Spin trigger in the base game?
If the two leftmost or two rightmost reels fill with matching symbols and no win is formed, a stacked walking wild appears on the middle reel and begins shifting across with respins.
Can the mystery symbols turn into multiplier wilds?
Yes. Each mystery cube can reveal a wild carrying a multiplier of x2, x3, x5, or x10. When two or more multiplier wilds land on the same payline, their values are added together.
What changed compared to the earlier Invading Vegas slots?
The main difference is the walking wild can now move left or right in the base game, depending on which pair of reels triggered it. Previously, direction was fixed until free spins.
How many free spins can you get in total?
You start with 12 free spins from 3 scatters. Each retrigger adds another 12, and the round caps at 120 spins maximum.
Do stacked high-pay symbols behave differently during free spins?
In the base game, stacked high pays only land on reels 4 and 5. During free spins they can also appear on reels 1 and 2, giving you more chances to trigger the walking wild and bigger combinations.