Zap Attack takes us on a voyage to the fictional city of Roswealth, where a sinister alien invasion just took place. Produced by Swedish developer Thunderkick, this slot is a fun but fascinating blend of high-spirited sci-fi, outer-space and dystopian themes.
In this Zap Attack review, we’ll detail every aspect of the game’s splendid graphical presentation and bonus features. There’s also an option to fully immerse yourself in the extraterrestrial action via a free demo available on this page.
| Software Provider | Thunderkick |
| Release Date | September 2023 |
| RTP | 96.15% |
| Volatility | High |
| Max Win | 5,000x |
| Reels x Rows | 5 x 5 |
| Minimum – Maximum Bet | $0.10 - $100 |
| Number of Paylines | 25 |
| Themes | Alien, Sci-Fi |
Zap Attack Details, RTP and Volatility
This alien adventure plays out on a 5x5 slot grid with 25 paylines. Zap Attack has an RTP of 96.15%, slightly above the average value for online slots. Thunderkick also throws in a maximum possible win of 5,000x your bet.
Players of all bankroll sizes are welcome, as the slot allows wagers ranging from just $0.10 up to $100. However, the slot is highly volatile, implying that sizable wins may be sparse.
Theme & Graphics in Zap Attack
The Zap Attack slot theme paints a vivid picture of Roswealth, a once vibrant town that is now deserted. Clearly inspired by Roswell, New Mexico, this dystopia features cacti and reddish-brown, desert-like imagery. Behind the reels, heavy smoke rises to the sky, suggesting that an explosion just took place, perhaps courtesy of a UFO attack.
There are no guarantees that the humans of Roswealth are safe, but their colorful personalities grace the reels as premium symbols. Alien caricatures, on the other hand, make up the special symbols.
Despite the cartoonish feel of Zap Attack, the developer also includes realistic animations. One example is the expanding multiplier wild, which zaps up all other characters on the reel in a cinematic sequence.
Overall, the slot’s theme is predominantly extraterrestrial, with multiple sci-fi references. The fantastic soundtrack combines slow instrumentals and creepy alien sounds. It actually sounds a lot like the beginning of a Ben 10 episode. But there’s also a “Johnny Cash meets little green men” vibe.
Zap Attack Slot Features
This section of our Zap Attack review is dedicated to unpacking the gameplay elements and features present in the slot. Read on for a detailed analysis of symbols, free spins and more.
Regular Symbols
Like many slots, Zap Attack adopts playing cards 10 through A as its lower-paying symbols. Q, J and 10 pay the same reward of 1x for a combo of five. On the other hand, K and A offer 1.5x, 0.7x and 0.4x for five, four and three, respectively.
The premium symbols are human characters. The blue farmer pays 2x for five, while the purple grandma returns 3x for the same number. Landing five pink waitresses and yellow sheriff symbols pays 4x and 5x.
Finally, there is a stand-alone alien icon that returns 1x for two, 2x for three, 3.5x for four and 10x for five.
Scatters
An old television set is the slot’s scatter. Landing three or more triggers the Bonus Game. You'll earn seven, 11 and 15 free spins for hitting three, four or five scatters, respectively.
Wilds
Regular wilds substitute for all base symbols except the scatter. Here, the symbol is depicted as a silver UFO with the word “WILD” drawn beneath it.
Expanding Multiplier Wilds
A special wild is also present in the Zap Attack slot, represented by a golden UFO with the inscription “Invading Wild”. When this appears on the grid, it expands to cover the entire reel and doles out random multipliers of 2x, 3x, 4x or 5x.
This wild also substitutes for any regular symbols and its multiplier applies to any win which includes it. Should a win feature more than one expanding multiplier wild, their values are multiplied together. The maximum cumulative multiplier possible is 125x.
Bonus Game
In the bonus game, landing two, three, four or five scatter symbols results in three, five, seven or nine additional free spins. During this round, alien symbols randomly shoot ray guns at human icon meters to the right of the reels.
Starting with the sheriff, then on to the waitress, grandma and the farmer, each meter is filled by a total of 10 zaps. Once a meter is full, the corresponding symbol transforms into an alien for the rest of the bonus round. You’ll also earn an extra free spin when each meter is filled.
How to Play Zap Attack Online
Hit the spin button to the bottom-right to start the action. Wins in the Zap Attack slot are counted from left to right. Match at least three of any symbol on a payline to earn a prize, with the exception of the alien. You only need two of him for a 1x return.
To improve your chances of landing big wins, activate the Buy Feature for a ticket directly into the Bonus Game. Using this feature allows you to purchase three, four or five scatters for 60x, 125x or 250x your bet, respectively.
Try the Zap Attack Demo for Free before playing for real money
As we round off this Zap Attack review, we recommend testing out all the features you’ve learnt before playing for real money. Taking advantage of free slots allows you to learn the rules without risk, as well as having fun. The best way to do this is to play the free Zap Attack demo game on this page.
The Zap Attack Review – Our Final Verdict
When it comes to alien-themed slots, many developers simply slap cartoonish UFO graphics onto some basic gameplay mechanics. There’s certainly nothing revolutionary about the bonus features found in the Thunderkick’s Zap Attack slot. But the developer does at least tell us a complete story around this sci-fi theme.
In addition, the introduction of aesthetically pleasing animations and a thoroughly enjoyable soundtrack makes for a thrilling experience. However, on the rewards side of things, Thunderkick fails to impress.
The game’s RTP is fairly average, coming in at 96.15%. While the maximum win of 5,000x is even lower than some of its older titles. Pink Elephants, for instance, which dates back to 2017, has a top payout of 8,200x. Overall though, despite the somewhat disappointing potential returns, Zap Attack is a fun slot to play.
Similar Slot Games
Here are some other games like Zap Attack, which can be found at our recommended online casinos.
- Pink Elephants: One of the first slots to use a feature where regular symbols transform to the highest paying icon. Pink Elephants has a 96.10% RTP and a max win of 8,200x.
- Reactoonz: Arguably the poster child for alien-themed slots, this Play’n GO release is played on a 7x7 grid. It has an RTP of 96.51% and pays out a maximum of 4,750x.
