"zombie survival"

-- server script for spawning zombies 
local zombieSpawn = game.Workspace.ZombieSpawn

while true do
    local zombie = game.ServerStorage.Zombie:Clone()
    zombie.Parent = game.Workspace
    zombie.Position = zombieSpawn.Position
    task.wait(10)
end
-- server script for zombie AI 
local zombies = game.Workspace:GetChildren()

for _, zombie in pairs(zombies) do
    if zombie:IsA("Model") and zombie.Name == "Zombie" then
        local humanoid = zombie:FindFirstChild("Humanoid")
        if humanoid then
            local target = nil
            while true do
                local closestDistance = math.huge
                for _, player in pairs(game.Players:GetPlayers()) do
                    local distance = (player.Character.HumanoidRootPart.Position - zombie.HumanoidRootPart.Position).magnitude
                    if distance < closestDistance then
                        closestDistance = distance
                        target = player.Character
                    end
                end
                if target then
                    humanoid:MoveTo(target.HumanoidRootPart.Position)
                end
                task.wait(2)
            end
        end
    end
end