Thunderkick is one of the studios that always create fun new slots to play. Zap Attack is certainly among them. Based on a sci-fi/alien theme with a light-hearted touch, it allows you to zap flying saucers off the sky and ward off the invaders.

This challenging job is rewarded with expanding multiplier wilds and symbol upgrades. The slot looks like a cartoon with the perfect light-hearted animated alien movie vibe. It’s also quite a colorful slot game set in the fictional town of Roswealth – we all know what it’s named after. The few inhabitants that run this town are doing everything they can to defeat the otherworldly forces, and you will help them in this war.

Specs-wise, it’s a 5x5 slot with 25 paylines. The volatility is high, with an RTP of 96.15%. Features include expanding multiplier wilds that can zap some of the small town’s inhabitants, but you can fight back against a full-scale invasion by carefully placing your bets. The slot’s main feature is the bonus round, where the winning potential takes a big jump. Read our Zap Attack slot review below and see why it’s worth a try.

Zap Attack looks like an alien invasion slot. It’s set in the small town of Roswealth, so it has a backstory besides the looks. Thunderkick always creates slots with great depth, and this one is proof of it. You’ll find the city’s residents on the reels, including the sheriff, a diner waitress, and an old lady. You’ll also see one of the nasty aliens in full battle armor, along with low-paying card royals.

The wild is a flying saucer that can substitute for other symbols in winning combinations. The slot’s lively colors make it a popping addition to the sci-fi niche. It’s the perfect pick for all alien invasion conspiracy theorists.

The Zap Attack slot is fully mobile-optimized. It runs on Android and iOS devices easily, and you don’t need to download any real money casino apps to play it on the go. Fire it up from a mobile browser and fight the invaders anytime.

Bets in Zap Attack begin from $0.10 per spin. You can max your wager out at $100 per spin. Hit the spin button when ready, or use the Autoplay feature to make the reels spin automatically. The base game itself is straightforward. You need three or more matching symbols on an active payline per the usual in order to hit a win. The flying saucer wild can help complete or improve the win. It can also land as a so-called invading wild, an expanding wild with a random multiplier up to x5.

The multiplier is applied only if the invading wild is part of a win. The good news is that the multiplier values are combined. If you land several of them, the maximum combined multiplier value is 125x.

Unfortunately, that’s all you get in terms of special features in the base game. But you should prepare to ward off the invaders in the bonus game.

Three scatters will trigger the game’s bonus round. You get seven free games for three, 11 for four, and 15 for the maximum of five triggering scatters. In the bonus game, two extra scatters bring three bonus spins, while three, four, and five deliver five, seven, and nine extra spins.

During the bonus, the alien invader may use his high-powered energy gun to zap some of the city’s residents. He shoots only mid-paying symbols in a particular order – sheriff, waitress, granny, and farmer. Every zapped inhabitant is collected in a meter. When ten fill it out, each symbol turns into an alien – that’s how they invade our cities. This also delivers one extra spin, and with several high-paying symbols landing on the reels, the slot’s overall winning potential is greater in the bonus.

The Zap Attack slot RTP is set to a more than solid 96.15%. That’s over the average for highly volatile slot games in Thunderkick’s catalog. The maximum payout is 5,000x the bet.

Zap Attack is a fun Thunderkick slot with just the right mix of special features and light-hearted vibes to make it a fun game to spin. It may not have a lot going on in the base game, but the expanding multiplier wilds are more than enough to make you turn it on and play it at top casinos. You get symbol upgrades in the bonus round for increased winning potential, so if you’re a fan of the alien theme, this one’s a great pick.