Post Published: February 10, 2021
Author: Chlo


Scored by our Casino Expert Chloe

Alien KO Slot Review – Green Jade Games

Today we are learning all about the studio Green Jade Games‘ latest slot release. I have actually not reviewed a game by the studio before, until now. The provider is a smaller studio, with a handful of games currently on the market. Today we are learning all about ‘Alien K.O‘, which is available to play now across all sites.

Alien KO Slot Review  Green Jade Games Symbols Bonus Volatile

This slot has a theme around the world being invaded by aliens and a mission to save it. Farms are in danger of being raided by the mothership above. The reel border is set in the mothership, with aliens sat at control panels and a massive screen showing a farmhouse. The game’s visual style is interesting and uses a fun theme.

Alien KO has a setup of 6 reels by 4 rows, this includes 50 set pay lines. This slot is high variance with a set RTP of 95.08% and max win capped at 10,000x. You can bet from £0.50 – £25.

Alien KO Pay Table & Symbols

Alien KO Slot Review  Green Jade Games Symbols Bonus Volatile

There are 13 symbols in total, this includes 5 low paying symbols. These are represented by 10, J, Q, K, and A. There are also 3 mid-tier symbols, these are represented by goats, pigs, and cows. Then finally 3 premium symbols, these are represented by scarecrows, female farmer, and male farmer. In addition to these regular symbols is a wild and loot box symbol. The highest paying symbol is the male farmer premium, which pays 40x for 6 across a pay line. Wilds appear on all reels in the base game and substitute for all other symbols except the loot box symbol.

Alien KO features

Landing 3 or more Loot Box symbols can either award a cash prize or act as a feature symbol activating the Free Spins feature. Loot box matches need to be horizontal and on adjacent reels. The more loot boxes that are matched the more potential there is for a higher price. During the Free Spins feature, there is a chance that a sticky wild symbol will appear. They act as regular wilds and stick to the reel set for the duration of the Free Spins feature.

The Knockout feature allows you to knock out symbols on the reel set, making it possible to line up loot box wins during the base game. When a symbol is knocked out it disappears and the symbols above it in the same reel will cascade down to fill the empty space. To achieve a line up of loot box symbols, 3 or more must be aligned adjacent. Loot box symbols cannot be knocked out. There is a K.O meter that displays how many K.O charges you have. Each charge allows for a single symbol knockout and earned by base game spins. At a rate of 5 spins per charge.

There is also a chance for ‘Hidden’ loot boxes to land above the visible reels after a reel spin. These have visual hints to help you locate them. If a mini loot box hint is seen above a reel, a K.O symbol is within that reel to bring a hidden loot box into view. Use your charges wisely as some hidden loot boxes can take up to 3 knockouts to drop onto reels.


Overall, I think this game is very interesting and well made by the studio. With a max win of 10,000x and unique feature mechanics on offer. Be sure to try out the game for yourself on release. Check out our exclusive casino offers.