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5 Best Real Money Alien Slots (and Where to Play Them Online)

Last Updated May 11, 2023 12:20 pm PDT
Best Real Money Alien slots with images of aliens and astronauts surrounded with slots imagery
  • Slots with an alien theme are popular games at online casinos, and I’ve found five to play.
  • Alien Spinvasion has an RTP of 95.98% and during regular play, you can trigger 11 free spins. 
  • It Came from Venus is a top alien slot with plenty of multipliers and a progressive jackpot.

Are human affairs—as H.G. Wells suggested—being watched from the timeless worlds of space? Good question, and one I certainly don’t have an answer for. Are our insect overlords just a few light-years away?

Guess we’ll know soon enough. In the meantime, if you are like me and worry you’re not getting enough theremin in your diet, prepare to be thrilled!

Plenty of USA online casinos feature alien themed slots from the fantastic to the bizarre—and every increment of weirdness between.

I’ve found five of the best alien slots for your entertainment and gambling pleasure. One might just become your new favorite alien slot game!

Game Alien Spinvasion Invaders from the Planet Moolah Area 51 Alien Wins It Came from Venus
Where to Play Visit Ducky Luck Casino Visit 888 Casino Visit XBet Visit Lupin Casino Visit MyBookie
Reels x Rows 5×3 5×3 5×3 5×3 5×3
RTP 95.98% 96% N/A 96.4% 95.80%
Developer Rival Gaming WMS Gaming Concept Gaming RealTime Gaming BetSoft
Casino Review Ducky Luck Casino Review 888 Casino Review XBet Review Lupin Casino Review MyBookie Review

Alien Spinvasion

Alien Spinvasion
  • Software: Rival Gaming
  • RTP: 95.98%
  • Release Date: March 14, 2017
  • Pay Lines: 1 to 50
  • Betting Limits: 1 cent to $125 (1 to 10 coins valued between 1 to 25 cents)

In most alien casino slots, the alien is front-row and center for much of the game. Not so in this 5×3 Rival game, but his appearances are welcome since he triggers what can be a very lucrative round of free spins.

But before I cover that in detail, let’s look at the basics first.

Regular symbols include a view of Earth from space, a red phone, a rocket ship, an alien egg, a ray gun, an asteroid, a flying saucer, and the nine through the ace.

To the left of the reels, a 2x, 3x, 5x, 7x, and 11x pole comes into play during a sticky wild free spin situation. There’s a special wild that is a screaming alien that becomes sticky and increments the multiplier pole by one position and then triggers another spin.

If the subsequent spin reveals an alien wild, the multiplier is incremented again, and another spin occurs.

At random during regular play, an army general can appear on the screen—the general triggers 11 free spins.

During these free spins, any win will first tally up, then the winning icons will disappear, and new symbols will drop down to fill the empty space, sometimes creating new winning combinations.

If this alien slot game sounds up your extraterrestrial alley, then play now at Ducky Luck Casino.

Invaders from the Planet Moolah

Invaders from the Planet Moolah
  • Software: WMS Gaming
  • RTP: 96%
  • Release Date: July 4, 2013
  • Pay Lines: 25 (fixed)
  • Betting Limits: 25 cents to $125

Interesting that this alien casino slot game premiered on Independence Day back in 2013.

It makes you wonder how much more successful the movie with that name might have been if the aliens had been milk cows rather than murderous monsters. But hey, what do I know?

In any case, this is one of the most successful of all slots with alien themes and is one of the few that made the successful transition from the real world to the Internet.

Regular icons include a dog, a grandpa, a grandma, a cowgirl, a beer-drinking man, a red barn, a trailer, a pickup truck, chickens, a carton of milk, a mailbox, and an outhouse.

During regular play, winning pay lines are totaled with each spin, and then a squad of saucer-flying cows zaps the winning icons, and new symbols cascade into place.

If these create a new win, the zapping and cascading occur again. Four or more cascades can result in as many as 50 free plays.

There are three wilds—a white, a brown, and a black cow—which substitute for any regular symbol. There’s also a jackpot icon, five of which, during any regular spin, can trigger a lucrative win.

Fun Fact: If you watch closely during the zap-and-cascade animations, you’ll notice that while the regular symbols are zapped out of existence, any wilds (cows) are levitated up to one of the squadrons of saucer-flying milk cows above the play screen.

You can play Invaders from the Planet Moolah at 888 Casino!

Area 51

Area 51
  • Software: Concept Gaming
  • RTP: N/A
  • Release Date: May 29, 2020
  • Pay Lines: 3125 (cluster wins)
  • Betting Limits: 50 cents to $5

This 5×5 alien casino slot game from Concept Gaming takes us to the infamous Area 51.

It shows us what’s really behind the veil of secrecy—a bunch of weird-looking people, an assortment of alien weapons, and a single green alien who appears during free spins.

Sure. I’ll buy that for a dollar.

Regular symbols are four different alien guns and rifles, five humans who all look a bit scurrilous, a glowing green grenade, and some sort of device, the only defining characteristic of which is that it’s green.

Maybe they explain what it is if you win big. I didn’t win big.

Special icons are the “Bonus,” the “Free Spins,” and a green alien (wild).

Three of the Bonus icons will allow you to spin the chambers of a pistol to determine how many shots at aliens you will receive 3 to 8). Then you shoot all the aliens presents, and each adds to your bonus win.

Three or more Free Spins symbols trigger from 10 to 25 free spins—and it’s during this free spin feature that the green alien wild can make his appearance (sorry, I saw no mention of its pronouns, so no offense, green alien).

The game does pay off regularly, and like most other alien casino slots, Area 51’s sound effects are well-done.

Each human has their own response to appearing in a winning pay line, some of which can surprise you into a chuckle.

Alien Wins

Alien Wins
  • Software: RealTime Gaming
  • RTP: 96.4%
  • Release Date: February 2, 2023
  • Pay Lines: 10 (fixed)
  • Betting Limits: 1 cent to $2.50

Even among alien themed slot machines, this is one of the odd ones. If you like gummi bears and crazy aliens, then you’re in for a double treat.

This 5×3 RTG alien game features a cast of alien heads that look like they are all some form of gummi candy come to life.

The regular symbols include blue, red, green, orange, and purple aliens with various amounts of eyes, as well as a ringed planet and some sort of globe with perpendicular orbit rings around it.

The single special symbol is the wild—a blue alien saucer with the usual cartoonish glass-enclosed pilot’s chamber.

But wait, there’s more! This wild can be a morphing wild (it fills the entire reel and triggers a respin).

Or it can be a bursting wild, triggered after a spin or re-spin; between 1 and three of these bursting wilds float down randomly onto the playing screen, often creating new winning pay lines.

There’s also a “cosmic spin” button that allows you to pay to see between one and three wilds appear on the next spin.

Fun to try, but remember that the cosmic spin option remains active until you specifically deactivate it. Face it: alien slot machines take weirdness to the next level.

You can play Area Wins at Lupin Casino, so head there now to play.

It Came from Venus

It Came from Venus
  • Software: BetSoft
  • RTP: 95.80%
  • Release Date: May 15, 2012
  • Pay Lines: 1 to 30
  • Betting Limits: 1 cent to $150 (1 to 5 coins, value 1 cent to $1)

This is the best slot with aliens for those who like to play online slots for real money.

The alien in this clever 5×3 game from BetSoft resembles a certain mean green mother from outer space that I’m sure is purely coincidental.

The artwork and sound effects are first-rate—as you’d expect from BetSoft—and the wins are satisfyingly frequent.

You’re a humble farmer who has somehow come into possession of an alien plant with a huge mouth and an overabundance of big white teeth.

It’s your job to protect the plant from the military, which wants to study it, kill it, or maybe see how it tastes in a light vinaigrette served with kalamata olives. Maybe all three.

Regular reel symbols include a smiling farmer, a scowling soldier, a scarecrow, a doghouse for “Butch”, a Humvee, a pile of dirt (don’t ask me), a red barn, and some gardening tools leaning against a wall.

Special symbols include the alien plant, a white helicopter, a no trespassing sign (scatter), and a “grow food” sack that can appear on the center reel.

Once you’ve collected five of these sacks, you win the “Feed Me” feature-free spins, during which additional sacks appear and remain sticky until the free spins end.

Three helicopters trigger a bonus pick round, wherein you attempt to find the alien plane inside five wooden rates. Your selection either adds money to your win or (when you find the plant) ends the round.

Additionally, 2x, 3x, and 4x multipliers appear randomly and can make winning pay lines even winninger. It’s a word.

There’s also a progressive jackpot that can only be won with max coins in. It’s paid out whenever five alien plant symbols appear during any regular spin.

As alien slots online go, this one is a real standout.

Incidentally, you can experience the thrill of outer space without the dangerous flora and fauna—just try out our selection of the best space slots.

Sure, Marvin, the Martian is a hoot, but sometimes, you just want to head out into space, second star to the right, and straight on ‘til morning.

Footnotes:

  • Wiktionary provides the details on the word winninger.
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J.W.
Paine
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J.W. Paine is one of the most experienced writers at GamblingSites.com. He's written for television and the printed media, and is a published novelist (as Tom Elliott).

Paine loves writing about Las Vegas nearly as much he loves living here. An experienced gambler, he's especially familiar with thoroughbred horseracing, poker, blackjack, and slots.

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