Alien Invaders Online Slot

Alien Invaders Online Slot Review

Blast off to our favourite online casinos where you find the Alien Invaders slot machine from Pragmatic Play. It’s a 5-reel game where adorable extraterrestrials land across 3, 4, or 5 rows, with the number varying across reels and on each spin. Matched symbols on the bottom row trigger a win, but all examples of the same symbol, on any rows above, become part of the combination. 

This innovative payout system isn’t the only rewarding feature of the Alien Invaders slot machine. Every win triggers the popular Tumble mechanism which sees new symbols drop onto the reels, which can lead to a new win and further Tumbles. Multipliers can build over a Tumbles series, only resetting at the end. A wild symbol helps by substituting for others when possible and a scatter symbol explodes on impact with the bottom row, destroying other symbols which then count for a win. Trigger a free spins feature and once extra rows unlock on a reel, the number of symbols will never drop down, while any multipliers increase throughout.

There’s lots to keep you entertained and your bankroll topped up as you play this desktop and mobile slot at the best uk online slots sites. It comes with a high volatility, matched with average returns of 96.50%. Play this rewarding game and you can abduct as much as 5,000x your bet, or a huge 1,200,000.00 at the maximum stake. 

How to Play the Alien Invaders Slot Online

Pragmatic Play take a fun, cartoon approach to the topic, with a selection of cute aliens in various colours and with different expressions across the 5 reels and up to 5 rows. Play across a desktop device, iOS, Android, or Windows mobile and you’ll have a close encounter with a goofy green alien, blue, one-eyed character, fiery lifeform and a mean-looking wild creature. Even high card symbols 10 through to A are in on the act, with goggly eyes and surprised faces. Yet another cute alien sits in his spaceship to the side of the grid in a rocky landscape where a weird electronic tune makes a perfect fit for the other-worldly environment.

Click the plus or minus tabs to the sides of the main Spin button to open a panel of bet options. Then click on the bet level, or coin value indicators to adjust the total stake from a minimum of 0.20 through many levels to the 240.00 limit. An Ante bet costs 25% on top but doubles the odds of entry to the free games, while you can jump right in for 65x the bet, or 400x for Super free spins with a 50x starting multiplier. Due to local laws, UK players can’t access these, with Autoplay and Quickspin modes also blocked in the country.

Th ‘I’ button takes you to the paytable where you can see how the unusual payout system works. The bottom row is highlighted in blue, and you win if 3, 4, or 5 matched symbols land on it, on any reels. The winning combination then includes not just the bottom row symbols, but also any examples of the same symbol above, on the same reels. You can see 3, 4, or 5 symbols per reel, with the number changing at random. Prize values range from 0.05x the bet for each 10, J, Q, or Kk in a combination to 1x for every fiery alien in a win. 

Take a look at all of the top casino offers up for grabs right here on Gambling.com.

Free Spins & Other Alien Invaders Slot Features

Every win triggers a Tumble, as the symbols involved explode and those above drop down. Tumbles repeat without limit until there’s no win. 

A purple alien with glowing eyes is the wild symbol, which acts as others when possible. For every 10 winning symbols on a spin or over a series of Tumbles, a wild multiplier increases by 1x and if the wild symbol hits the bottom row, it’s multiplier then applies to the overall win. The wild multiplier then resets to 1x at the end of any Tumble sequence.

Meteorite scatter symbols hitting the bottom row will explode, along with all adjacent symbols which all then count as a win. If at least 3 scatters land at the same time, in any places, they award 7 free spins, plus 1 more for each additional meteorite in view. 

Each reel gets 3 symbols on the first free game, with at least 1 extra symbol added to random reels on every following spin to the maximum of 5 rows. Once a reel has an extra symbol, it will never go back down for any remaining free games. Any wild multipliers remain persistent, so they don’t reset once Tumbles come to an end but continue to grow for every 10 winning symbols throughout. Wild multipliers can also come with random values of 2x, 3x, 5x, 10x, 25x, 50x or 100x, while each new scatter symbol adds 1 extra spin to your total.

Alien Invaders Slot Maximum Wins, Volatility, & Average Returns

Our Alien Invaders Slot Rating

A fun theme, innovative payout system, and enjoyable features combine here. The maximum win multiplier is relatively low and look out for lower average returns at some casinos. Be sure to play at our recommended sites to get the highest rate of returns. 

The way symbols pay when they hit the bottom row, activating all matched symbols above is a great innovation and we’re surprised that Pragmatic Play haven’t given this system a name, as it’s sure to soon feature in more games. Tumbles, wild multipliers, the impact of meteorites, and free spins with expanding reels and ever-increasing wild multiplier values add up to a thrilling adventure with these cute lifeforms. You can play the Alien Invaders slot at our approved top casinos from 10^th July 2025.