Invaders Megaways Online Slot Review

It was just another peaceful day on the farm until Invaders Megaways arrived. Then the cows went wild and green extraterrestrials started beaming potential wins of up to 25,000x the stake from their UFOs onto your screen!

When we say there are a million ways to win in the online slot, we’re not exaggerating. Based on Invaders from the Planet Moolah, this Megaways slot by SG Gaming features cascading reels, wild multipliers, reel modifiers, expanding symbols, multipliers, and much, much more.

Find out all you need to know in our online slot review.


Stand out features

Invaders Megaways combines the best of Invaders from the Planet Moolah with classic Megaways gameplay. However, unlike most Megaways games, which take on a prevailing format that consists of mystery symbols, free spins, and increasing multipliers, Invaders Megaways has even more features on offer, keeping things new and extra exciting.



The grid on Invaders Megaways is almost like a Tetris game – the symbols come in various sizes to accommodate the cascading reels. Each reel contains between two and 10 symbols at a time, and when a winning combination occurs, the winning symbols explode, making room for new symbols to appear and the potential for multiple wins to occur on a single spin. When no more cascades occur, the total amount won on that spin will be awarded.

The number of ways to win is dependent on the number of symbols on the screen and is displayed beneath the Invaders Megaways logo on the top right of the screen.


Free Spins

The big red moon is the bonus symbol, and four or more on the reels will trigger up to 15 free spins. During the free spins round, a high-paying symbol is selected, and will apply one of the following modifiers on each spin:

  • Alien: All alien symbols will expand into larger symbols to increase the number of ways to win.
  • Cow: All cows become x2 multiplier wilds.
  • Invaders Logo: All logo symbols expand to fill their respective reels.
  • Mad Scientist: Every cascade results in an increasing multiplier up to x256.
  • Ray Gun: Each ray gun symbol will add a wild to the reels.


UFO Wild Selector

The UFO hovers above the reels during the base game, and randomly chooses any symbol to act as a wild, by beaming down on it, a green “Wild” banner. All of the chosen symbols on reels 2 to 5 will then be turned wild for the entirety of the spin, substituting for any of the other symbols (except for the bonus and logo modifier) to create potential wins.

During the free spins round and Mythical Unicow feature, the chosen symbol can be transformed into a wild across all the reels, not just between reels 2 and 5.


Mythical Unicow

Flying cows have never been this lucrative! When the mythical unicow flies her spaceship onto your screen, all the reels will display seven to 10 symbols each, creating between 168,070 and 1,000,000 ways to win!



The game is set on a farm, complete with an old farmhouse and crop circles, under a starry night sky. There's a spooky atmosphere to the setting, but a groovy electronic soundtrack will have you dancing in your seat while you play.

A luminous green brings the reels to life, with an electrifying aura framing winning combinations. The graphics on this game are of excellent quality, and the animations create an interactive experience for players, with the UFO hovering about the reels ready to zap at symbols and turn them wild. The classic alien sound effects also add to the thematics of the game, keeping players immersed, even when reviewing the paytable or adjusting the settings.

Symbols on the reels include low-paying card symbols 9, 10, J, Q, K, and A in a funky alien style, as well as the higher-paying laser gun, abducted cow, green extraterrestrial, mad scientist, and an Invaders logo symbol, in ascending order of value.




Invaders Megaways is a highly volatile game, so players may not land wins all that often, but the payout will be larger than lower volatility games. The RTP (return to player) is 96.3%, which is just above average, but remember, the more symbols on the reels, the more ways to win!

This game can be played online on both desktop and laptop, as well as on a mobile casino app on your mobile phone or tablet device.

To play Invaders Megaways:

  1. Review the paytable (found under the gear symbol to the left of the reels) and if you need to, adjust your sound volume accordingly. The settings button will also give you the option of switching the play and setting buttons around, making it easier for left-handed players to spin the reels.
  2. Next, adjust your bet size by clicking the coin symbol to the right of the reels. Choose between 0.25 and 10 coins per spin.
  3. For smooth gameplay, use the autospin option, found above the play button, and choose between 10 and 50 autospins. Then set your win and loss limits, which will stop the autoplay mechanic when those amounts have been reached.
  4. Press the big green play button and enjoy the game!


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Neal / 08 December 2021