Build believable zombie enemies faster with a configurable Unity AI system, streamlined setup tools, and flexible integration for horror, survival, and shooter games.Documentation | SupportAdvanced Zombie AI is back with v1.0.4, featuring a cleaner architecture, improved performance, and a more polished workflow.Advanced Zombie AI is a configurable zombie behaviour system for Unity, designed for horror, survival, shooter, and wave-based games.Create zombies that wander, detect targets, chase, attack, crawl after taking lethal damage, traverse Off-Mesh Links, and enter ragdoll mode when killed. Each zombie is configured through a single AdvancedZombieAI component and can be integrated with your own player, weapon, health, audio, VFX, and scoring systems.FeaturesThree wandering modes: Choose between random wandering, ordered waypoint patrols, or following a moving target. This makes it easy to create zombies for survival horror, wave-based gameplay, or fast-paced COD-style modes.Hearing system: Zombies can react to sounds made by the player, such as footsteps and gunshots.Target memory: When a zombie loses sight of its target, it continues searching for a configurable amount of time before giving up and returning to its normal behaviour.Standing and crawling phases: Zombies can collapse into a crawling state after their standing health is depleted. Crawlers have their own health, movement speeds, animations, and wandering, chasing, and attacking behaviour.Vision-based detection: Configure field of view, detection distance, sight origin, and line-of-sight checks to control how zombies detect targets around walls and level geometry.Head and body LookAt IK: Zombies can turn their head and upper body towards their target while chasing or attacking.Waypoint actions: Each waypoint can make a zombie continue immediately, wait for a while, scream, or play a custom animation before moving on.Flexible target support: Use the included ZombieTarget component to make players, NPCs, objectives, or other GameObjects valid zombie targets.Responsive chasing: Configure chase speed, target memory, and movement offsets to prevent groups of zombies from crowding into the exact same position.Context-sensitive attacks: Use separate attack animations for stationary targets, moving targets, and crawling zombies.Basic stealth system: Players can move quietly to reduce the chance of being detected and sneak past nearby zombies.Combat system integration: Connect attacks, damage, and death events to your existing combat system through Inspector UnityEvents or C# events.Headshot support: Assign the zombie’s head hierarchy and apply a separate damage value when it is hit.Automatic ragdoll death: Zombies can switch to ragdoll physics when killed for more natural-looking deaths.Flexible spawning system: Continuously spawn random zombie prefabs over time or spawn a new zombie whenever an existing one dies.NavMesh vaulting: Zombies can detect Off-Mesh Links and play a dedicated vault animation while crossing obstacles, ledges, or gaps.Guided setup window: Set up new zombie characters through a simple three-step editor workflow. Existing components are preserved, missing requirements are added automatically, and all changes support Undo.Note: Some scenes, animations, environments, and third-party assets shown in the screenshots and demonstration videos are for presentation purposes only and may not be included in this package.Asset used in Zombie Crawling Showcase video: "Kriss Vector Animated( Free)" (https://skfb.ly/6RKL7) by BarcodeGames is licensed under Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/Render PipelineThe core AI system is render-pipeline independent. It can be used in Built-in, URP, or HDRP projects.The included demonstration scenes, materials, and visual assets are configured for the Universal Render Pipeline.Navigation RequirementsRequires a valid Unity NavMesh at runtime. Zombies use NavMeshAgent for movement.ArchitectureEach zombie uses one AdvancedZombieAI MonoBehaviour as its runtime coordinator.Target DetectionTargets use the ZombieTarget component.Detection supports:Field of viewView distanceCustom sight originPhysics layer maskLine-of-sight obstructionTarget look pointStaggered perception updatesNo custom player or zombie tags and layers are required.DependenciesAI Navigation for NavMesh authoring and navigation workflows.Universal Render Pipeline for the included demonstration visuals.Input System for the optional demo player and weapon.The core zombie runtime does not use the Input System.Animation Note: Please be advised that even though this asset include animations but they are poorly built due to the absence of an animator. They are for the purpose of demonstatration only. Users are encouraged to substitute animations of their choice for a customized experience. We may upload better quality animations in future updates.
