What On Earth Slot Machine

Look up to the sky to spot the aliens that lurk behind the clouds, waiting to find the next victim to abduct. Will you spot the aliens on time to land the big wins?

What On Earth Slots is a 5-reel video slot game with 9 pay lines and a unique alien theme. Powered by Microgaming, this casino game comes with wild symbols and scatters. The game has a number of unusual symbols such as the blue alien, red rocket and the green flying saucer symbol. 

Find out how to fly across the galaxy to bring home the jackpot with wild symbols, scatter symbols, and amusing bonus features in this What on Earth Slot Review.

Best What On Earth Slot Sites

From our research, we have created a list of the best What On Earth Slot sites:

  • Slots Magic

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    UP TO £50 + 50 FREE SPINS

    First Deposit Only. Min. deposit: £10, max. Bonus £50. Game: Rich Wilde and the Book of Dead, Spin Value: £0.10, Max Extra Spins:50. WR of 30x Deposit + Bonus amount and 60x Extra Spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the extra spin winnings and bonus amount or £5 (lowest amount applies). Extra Spins must be used before deposited funds. Bonus Policy Applies.

    Full T&C's Apply

  • Wizard Slots

    Wizard Slots Logo
    500 FREE SPINS

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  • Slots Baby

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    New Players Only, Min Deposit £10, £8 Max Win Per 10 Spins, Max Bonus Conversion Equal To Lifetime Deposits (Up To £250), 65X Wagering Requirements.

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  • William Hill Vegas

    William Hill Vegas Logo
    100 FREE SPINS

    18+. Play Safe. New customers only. Opt in required. 1x per customer. Fishin Pots of Gold only. Min £10 stake. Max 100 Free Spins at 10p per spin. Free Spins expire 24 hours from issue. Max redeemable £30. Eligibility rules, game, location, currency, payment-method restrictions and terms and conditions apply. #ad

    Full T&C's Apply

  • Mr Green Casino

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    100 FREE SPINS

    18+. Play Safe. New customers only. Opt in required. 1x per customer. Min. £10 stake. Max. 100 Free Spins at £0.10/spin on Big Bass Bonanza only. Bonus expires 72 hours after issue. Game weighting, game, country, currency, player restrictions and terms apply. #ad

    Full T&C's Apply

  • PlayOJO Casino

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    First deposit only. 50 Free Spins on Book of Dead slot. Free Spin valued at £0.10. OJO’s Rewards and Game Play policy applies.

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About What on Earth Slots

What on Earth Slot comes with five reels, three rows and nine pay lines.

The symbols are peculiar in a galaxy-board slot game with many symbols. The symbols include peculiar-looking aliens, rockets, and glowing asteroid. Other symbols are a sun, some planet symbols, cherry, watermelon and many others.

What an Earth Slot is an entertaining game for all slot lovers. The player has to help the aliens kidnap humans by sending those aliens on the earth.

What On Earth Slot Machine

How to Play What on Earth Slots Online

What on Earth Slot is easy to play. First, you need to choose a pay line by clicking on Select Lines.

  • Next, click Select Coins and use + and – buttons to choose your bet amount. 
  • Then, click on the Spin button to start this game.

Players can choose to spin the reels with Autoplay to spin the reels. If you are an advanced player, you should choose the Expert option to avail many autoplay spins. 

This game is available on the iPhone and the iPad.

Slot Info

What On Earth SlotsAttributes

Casino Game:

What On Earth Slot Game


9 pay line slots




Microgaming Software

Minimum Bet:


Max Bet:



Low Variance Slots



Slot Theme: 


Bonus Features:

Wild Symbols & Scatter Symbols

Max Win:

7500 coins

Free Spins:


Release Date:


Interactive Features

The What On Earth Slot game comes with some unique features, including wild symbols and scatter symbols.

What on Earth Wild. The wild symbol is the game logo. The wild symbol can only substitute for the blue alien symbol and the control panel symbol.

Rocket Scatter. What on Earth Slot has three scatter symbols. These are the red rocket, the green flying saucer, and the blue rocket. These scatter symbols do not give you high rewards.

What on Earth Bonus Rounds. It has two bonus rounds- the Beam ’em Up Bonus Round and The Destination Bonus Round. 

Beam ’em Up. The player has to line up either three blue rockets, three green flying saucers, or more than three red rockets to trigger the Beam ’em Up Bonus Feature. In this feature, the player selects one of the main alien characters to win a multipluer. 

You need to catch three types of symbols. In this bonus round, you have three special symbols- a teddy bear, a lady and policeman. You can get high rewards by catching those symbols.

Destination Bonus. In the Destination Bonus Feature, the player travels around the world with the alien to choose a city. They can choose from New York, London, Cairo or Beijing. The player has to help the alien abduct a special character from the chosen city to win mutlipliers. 

What Symbol Trigger What on Earth Slot Bonus Free Spins?

What on Earth Slot does not have a bonus free spins round.

Payline and Stakes

What on Earth Slot comes with nine pay lines.

A player can bet a minimum of 0.01 per spin and a maximum of 45 per spin on a pay line. Wins in the game pay from left to right except for the scatter symbols which pay as long as they are on adjacent reels. 

Players can win rewards up to 37,500 coins by playing those bonus rounds.

What On Earth Slot Machine

What on Earth Slot Game Software

What on Earth Slot is powered by Microgaming software.

Microgaming is a top slot game developer in the industry. The game developing company has released many award-winning games throughout the years.

What is the What on Earth Slots RTP?

The RTP of What on Earth slots is 96%. This rate is promising for players who want to try this game out. The What on Earth rate promises a return of 96 pence for every pound placed as a bet.

What is the What on Earth Slot Variance?

What on Earth Slot is a game with a low to medium variance range. This range explains that low to average-paying wins is consistently awarded throughout the game. Playing What on Earth Slot longer means having more chances to win bigger prizes.


What on Earth Slot is an amusing game with old-school graphics and design. The overall feel of the game is very nostalgic, taking players back to the 80s and 90s. The most notable features in the game are the bonus feature, Beam ’em Up and Destination. 

A progressive jackpot may help make the game more popular. What on Earth Slot is a slot game that is out of this world.

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James has almost a decade of experience in the iGaming Industry. Winning several awards including "UK Casino Affiliate of the Year" he uses his experience to research the UK market to source the best bingo welcome bonuses, highest casino slots real money payouts and free spins sign up offers.