Zap Attack Slot Demo - Free Play

Zap Attack Slot Review

Zap Attack is a retro sci-fi slot from Thunderkick where cartoon aliens swoop into a terrified small town and can zap prizes up to 5,000x your stake. The action plays out on a 5x5 grid with 25 paylines, blending humour, bold animations, and punchy sound effects for a fun, fast-paced experience.

You’ll meet the sheriff, waitress, grandma, and farmer alongside an alien leader, high-card emblems, and flying saucers. Expanding UFO wilds with multipliers and a free spins bonus that transforms humans into high-paying aliens drive the most significant wins. 

The game is high volatility with a 96.15% RTP, and it runs smoothly on desktop and mobile (iOS, Android, and Windows).

How to Play Zap Attack

Zap Attack is set in Roswealth, a desert town suddenly under alien invasion. The 5x5 setup uses 25 fixed paylines that pay from left to right. Tap the Bet button to choose stakes from 0.10 to 100.00 per spin.

Key interface elements sit below the reels: Spin, bet adjusters, and information (paytable and rules). Autoplay, Quick Spin, and a Bonus Buy option may be available in some regions; however, UK players cannot use these features due to local regulations. For a risk-free taster, try the Zap Attack demo before you play for real.

Zap Attack Symbols & Payouts

Character and alien symbols bring the bigger hits, while card emblems cover the low end. A quick rundown:

• Low pays: High-card emblems pay up to 1.5x your stake for five of a kind.
• Alien: Top regular symbol pays up to 10x your stake for a five-symbol line.
• UFO Wild (silver): Substitutes to complete or improve wins.
• Invading Wild (golden UFO): Expands to fill its reel and applies a random 2x–5x multiplier to wins it helps create.
• TV Scatter: Triggers free spins when 3–5 land anywhere.

When more than one Invading Wild is part of the same winning combination, their multipliers multiply together for up to 125x the baseline win.

Zap Attack Free Spins and Bonus Features

The TV scatter launches the bonus game:

• 3 scatters: 7 free spins.
• 4 scatters: 11 free spins.
• 5 scatters: 15 free spins.

During the feature, additional scatters can retrigger more spins:

• 2/3/4/5 scatters in one spin: +3 / +4 / +5 / +9 extra spins, respectively.

The signature twist is the Alien Zap progression. Aliens target humans in order: sheriff, then waitress, grandma, and farmer. Each character has a meter that fills with 10 hits. 

Filling a meter: (1) transforms that human into a high-paying alien for the rest of the bonus, and (2) awards +1 extra free spin.

 As more humans become aliens, the reels become increasingly premium-heavy, boosting your shot at those big combos.

Zap Attack RTP, Maximum Win & Volatility

• RTP: 96.15% (average return over the long term).
• Volatility: High — expect streaky sessions with potential for large hits.
• Max win: Up to 5,000x your stake (e.g., 500,000.00 at the 100.00 max bet).

Between the expanding Invading Wilds, multiplying multipliers, and upgrade-heavy free spins, play Zap Attack for momentum-driven gameplay with real top-end potential.

Zap Attack Verdict

Zap Attack nails the retro alien-invasion vibe with personality-packed characters and clean, colourful visuals. The base game is lively thanks to expanding wild reels and multiplying multipliers, while the free spins mode steadily upgrades the grid into a field of high-paying aliens.

If you like high-volatility slots with clever progression mechanics, the Zap Attack slot is worth a close encounter. Start with Zap Attack free play to master the features, then look for trusted Zap Attack slot sites when you’re ready to chase those cosmic wins.