Survive the swarm. Salvage the fallen. Build your defense.
You spawn alone in a ruined 3D world with nothing but a sidearm. Every zombie you drop leaves scrap behind โ spend it building walls, floors and ramps on the fly to wall yourself in, or drop auto-turrets that fight beside you. Zombies also drop scavenged parts โ craft better weapons out of them mid-run before your next wave arrives.
Spend salvage earned from past runs on permanent upgrades. Whatever's equipped here is what you drop in with next time.
Zombies drop scavenged parts. Craft them into better weapons โ lasts for this run only.