Thunderkick has presented players with an extraterrestrial experience as alien UFO’s rain down from the sky in the studio’s latest slot release, Zap Attack!


Out now


Alien invasion


Zap Attack! is a 5×5 reel slot with 25-paylines with a maximum win of up to x5,000 the player’s bet. 




96.15 per cent


Low value symbols come in the form of the high end of a deck of cards, from 10 through to Ace. If the right number of winning combinations land on a single spin, these symbols can offer between x0.3 and x1.5 the player’s stake. 

Next up, blue farmers, purple grandmothers, pink waitresses and yellow sheriffs depict the medium value symbols, offering between x0.8 and x5 the chosen wager. 

Alien invaders represent the high value symbols for this game. These symbols can offer between x1 and x10 the player’s bet, depending on the number of paying combinations that appear on one go. 

Bonus television scatters are also available, triggering seven, 11 or 15 free spins if three, four or five scatters land on the same spin respectively. 

Finally, wild UFO symbols can drop into play, substituting for all symbols other than the television scatters. 

Each wild that drops into play can expand across its reel if it will result in a winning payout, presenting a multiplier of either x2, x3, x4 or x5 to be applied to the win when this occurs. Two multiplier wilds that contribute to the same payline win will combine their multiplier values together for an enhanced win, with a maximum combined multiplier of x125 (5x5x5). 


With the free spins game mode, each high value alien symbol that appears will shoot a ray gun at medium value symbols on the board. 

Starting with the yellow sheriff as the medium symbol with the highest value, the alien will shoot these symbols each time they appear on the same spin. Once a medium value symbol has been shot 10 times across different spins, it will be upgraded to the high value alien symbol. 

After the yellow sheriff has been converted into an alien, the next aliens will go for the pink waitress, followed by the purple grandmother and then the blue farmer, working their way down the medium value symbols. 

Each time a medium value symbol has been shot 10 times to be upgraded into the high value alien, one extra free spins will be provided for the bonus game mode. 

Additionally, landing two, three, four or five scatters on the same free spins will award an additional three, five, seven or nine free spins respectively. 


Mike Collins, Product Owner at Thunderkick, commented: “Welcome to Roswealth! We’re thrilled with our latest release and placing players into the thick of the action in Zap Attack!”.

“We’re excited to see players defend the town with expanding multiplier wilds and a fantastic bonus round, and we’re particularly proud of this game’s theme – the spirited design and immersive soundtrack make for an unforgettable experience. Ray guns at the ready.”



To have a go at the Zap Attack! demo, click here.