Step into the infected streets of Dark Valley, where chaos reigns after a deadly viral outbreak! In PG Soft’s thrilling Zombie Outbreak slot, players must survive waves of flesh-eating zombies in this 5-reel, 4–5-row video slot featuring Expanding Wild symbols with 3 collectable multipliers and up to 1,600 ways to win. Boasting a 96.76% RTP, high volatility, and a maximum win of 5,000x your bet, this survival slot blends fear, tension, and huge win potential! Land 3 Scatter symbols to trigger 15 Free Spins, and collect multipliers from Expanding Wilds for explosive payouts.
Story Background of Zombie Outbreak
The peaceful town of Dark Valley was once a quiet refuge—until a mysterious virus spread overnight, turning citizens into ruthless zombies. Streets once filled with laughter are now littered with debris and horror. Amid this chaos, a small group of survivors is making their way toward the city center, seeking the last beacon of hope where supplies and communication may still exist.
But survival won’t come easy. Each spin in Zombie Outbreak mirrors the desperate struggle between life and the undead. Will you outlast the horde and claim your reward before it’s too late?
Don’t look back—the undead are right behind you. Survive, spin, and seize your fortune in PG Soft’s Zombie Outbreak!
Want more thrilling adventures? Visit our PG Slot Free Demo Lobby to explore more games and free demos.
PG Zombie Outbreak Game Features
Zombie Outbreak captivates players with survival-themed gameplay and innovative features that fuel both suspense and big wins. Collect multipliers from Expanding Wilds, trigger suspenseful Free Spins, and unlock cinematic wins that make every spin a fight for life!
Expanding Wild Symbols with Multipliers
When Wild symbols land on reels 2 or 4, they instantly transform into Expanding Wild symbols, stretching to cover the entire reel. Each Expanding Wild contains three hidden multiplier values, which might appear as:
- x1 / x2 / x3
- x2 / x3 / x5
- x3 / x5 / x12
- x5 / x10 / x15
- x10 / x15 / x25
During each win, the lowest multiplier value from each Wild is collected at the bottom of the reels. Then, the total win is multiplied by the collected value before payouts are awarded. The Expanding Wild remains active until all three multipliers have been collected or the spin ends—intensifying every round of play.
Free Spins Feature
Landing 3 Scatter symbols anywhere on the reels triggers 15 Free Spins, while additional Scatters add 2 more spins each—with no upper limit! During Free Spins, all collected multipliers remain active until the end of the feature, creating higher win potential with each spin. The Free Spins Feature can also be retriggered, letting players chain together waves of hoard-clearing spins for epic payouts!
Maximum Win Multiplier
Players can achieve a theoretical maximum win of 5,000x their bet. When the total win cap is reached, the round ends automatically—ensuring fair play and balanced mechanics for all survivors.
Feature Buy Option
Don’t wait for fate to trigger your Free Spins—activate them instantly through the Feature Buy option! Choose your preferred entry cost, unlock the Free Spins Feature directly, and face the zombie horde head-on without delay.
Symbol Payouts Overview
- Wild Symbol: Appears on reels 2 and 4 only, substitutes for all symbols except Scatter.
- Scatter Symbol: Appears anywhere; 3 or more trigger the Free Spins Feature.
 |
Scatter Symbol |  |
Wild Symbol |
 |
5 50 4 30 3 20 |
 |
5 30 4 20 3 10 |
 |
5 30 4 20 3 10 |
 |
5 20 4 10 3 5 |
 |
5 20 4 10 3 5 |
 |
5 10 4 5 3 2 |
 |
5 10 4 5 3 2 |
 |
5 10 4 5 3 2 |
 |
5 5 4 2 3 1 |
 |
5 5 4 2 3 1 |
 |
5 5 4 2 3 1 |
Zombie Outbreak Strategy Guide (For New Players)
- Start with a small, fixed budget.
Zombie Outbreak is a high-volatility slot, so wins may come in waves rather than every few spins. Set a fixed amount you are willing to spend for one session and use low bets so you can survive long enough to see Free Spins and Expanding Wilds in action.
- Watch what happens when Wilds expand.
When a Wild lands on reels 2 or 4 and expands, look closely at the three multipliers inside it and how the lowest one is collected at the bottom before wins are paid. This helps you understand how small multipliers like x2–x3 can slowly build up into bigger wins over several collapses in the same spin.
- Don’t rush into Feature Buy.
The Feature Buy button is tempting, but new players often burn their balance too quickly by buying Free Spins again and again. Try to experience naturally triggered Free Spins first, get used to the pace of the game, then only consider Feature Buy when you are comfortable with how fast your balance moves up and down.
- Treat Free Spins as your “bonus chance”.
Most players’ bigger wins tend to happen in Free Spins, because collected multipliers stay active until the feature ends. When you hit Free Spins, stay calm, watch how often Expanding Wilds appear, and resist the urge to instantly raise your bet right after one good bonus round.
- Know when to walk away.
Many beginners keep spinning after a decent win, hoping for an even bigger one, and end up giving everything back. A simple rule is: if you hit a win that is clearly bigger than your starting budget for that session, consider stopping or switching to another game so you actually keep some profit.
Free Play:
Zombie Outbreak FAQ
Don’t just dream about apocalyptic wins—break through the zombie horde today! Join Dark Valley survivors and let every spin bring you closer to 5,000x glory. Play now on Midori Online for your chance to survive with massive payouts!
Chinese version: 丧尸危机
