Ignite the Reactor: 144 Unique Synergies The heart of your strategy lies in the Reactor. Connect 12 unique towers to forge new combinations. Combine acid, fire, rocket, ice, and sound-based towers to discover 144 devastating synergies. Every connection fundamentally changes how your automated defense operates.

Build a Flawless Kill Factory Once your synergies are set, let them do the killing. The goal isn't just surviving—there is no health bar or classic "Game Over" screen. However, every zombie that breaches your defenses means lost loot. Funnel 360-degree zombie hordes into deadly corridors and watch your Reactor build melt them down.

Take Risks, Force Mutations, Earn More Is your synergy build strong enough? Prove it by forcing the zombies to mutate. Integrating risk directly into your tower strategy makes enemies deadlier but yields massive rewards. Play it safe with easier hordes, or push your combinations to the limit to multiply your loot.

Boss Contracts and Permanent Progression When you're ready, sign a contract to summon massive Zombie Bosses. Let your towers tear them apart in seconds while you extract rare DNA, unlock permanent upgrades, and forge even stronger combinations in future runs.