Zombie Invasion features a 3x5 grid layout with 30 paylines, typical for many video slots. Wins form by landing matching symbols across these paylines from left to right. Key symbols to watch for include the zombie symbols, which are crucial for triggering the bonus round. The game's horror theme is reflected in its symbols and overall design, immersing you in a spooky atmosphere as you spin the reels.

Zombie Invasion's medium volatility means you can expect a mix of small and medium-sized wins. This makes it suitable for players who enjoy longer sessions without the risk of significant bankroll swings. The absence of a bonus buy option means you'll need to trigger features through regular play, which can affect session length and strategy.