How to make a natural disaster game in Roblox Studio

What makes a natural disaster game work

The loop in one line: spawn on the map, hear which disaster is coming, find a safe spot, survive the timer, earn a win, do it again with a new disaster.

• A warning first. Announce the disaster a few seconds before it starts. The fun is deciding where to go: up for a flood, inside for meteors, outside for an earthquake.
• Every disaster has a counter. High ground beats a flood, a roof beats meteors, open space beats falling buildings. A disaster with no safe spot feels random.
• Fast rounds. Dead players wait for the next round, so keep rounds short. A round that drags makes the dead leave.
• Spectacle. Sound, camera shake and a map that visibly breaks are why people play. Spend your polish here.
• Many maps. A small town, a ship, a mountain base. The same disaster plays differently on each.

The systems you need

Build plan: from a baseplate to launch

First playable

1. Build a lobby with a SpawnLocation, away from where the map will be.
2. Build one small map as a Model named Map: a few houses, a tower and open ground. Add a part named MapSpawn where players land. Move the model into ServerStorage and a folder named Maps.
3. Add the round script below with its two disasters, and press Play. Watch Output for each round's disaster name and the list of survivors.
4. Add a HUD that reads the Status and TimeLeft attributes the script sets on ReplicatedStorage.
5. Tune each disaster until there is always a way to survive it on this map.

First public test

Two maps, four disasters, wins in leaderstats. In the test, watch which disaster kills almost everyone (too hard), which kills nobody (boring), and whether the server stutters during destruction. The server performance stats in the Developer Console (F9) show how busy the server is while a disaster runs.

What to add for launch

• Six to ten disasters with their own sounds and a short warning line each.
• Three or more maps, picked at random or by a vote in the lobby.
• Saved wins and a global top list.
• Spectating for players who died, so they keep watching until the round ends.
• A balloon or a gear item that helps a little against some disasters (see monetization).
• The Maturity and Compliance Questionnaire in the Creator Dashboard: Roblox restricts who can play a game without content maturity information.

The defining mechanic: rounds with a random disaster

This server script runs the whole game: it clones a fresh map, moves players onto it, picks a disaster from the DISASTERS table, waits out the round, rewards survivors and resets. Each disaster is a function that receives the map and returns a cleanup function, so the round loop never needs to know how a flood or a meteor works.

ServerStorage
  Maps Folder
    Town Model
      MapSpawn Part
ServerScriptService
  Disasters Script new

-- Script in ServerScriptService named Disasters.
-- Round loop: fresh map, random disaster, survivors win, reset.
local Players = game:GetService("Players")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local ServerStorage = game:GetService("ServerStorage")
local TweenService = game:GetService("TweenService")
local Debris = game:GetService("Debris")

local INTERMISSION = 15
local ROUND_TIME = 60
local maps = ServerStorage:WaitForChild("Maps")

local function setStatus(text: string, timeLeft: number)
	ReplicatedStorage:SetAttribute("Status", text)
	ReplicatedStorage:SetAttribute("TimeLeft", timeLeft)
end

local function rootOf(player: Player): BasePart?
	local character = player.Character
	return if character then character:FindFirstChild("HumanoidRootPart") :: BasePart? else nil
end

type Disaster = { name: string, run: (map: Model) -> () -> () }

local DISASTERS: { Disaster } = {
	{
		name = "Flood",
		run = function(map)
			local pivot = map:GetPivot()
			local water = Instance.new("Part")
			water.Name = "Flood"
			water.Anchored = true
			water.CanCollide = false
			water.Transparency = 0.4
			water.Color = Color3.fromRGB(40, 110, 200)
			water.Size = Vector3.new(400, 2, 400)
			water.CFrame = pivot * CFrame.new(0, -1, 0)
			water.Parent = map
			-- the top rises from the ground to 60 studs over the round
			local goal = { Size = Vector3.new(400, 62, 400), CFrame = pivot * CFrame.new(0, 30, 0) }
			TweenService:Create(water, TweenInfo.new(ROUND_TIME, Enum.EasingStyle.Linear), goal):Play()
			local running = true
			task.spawn(function()
				while running do
					local surface = water.Position.Y + water.Size.Y / 2
					for _, player in Players:GetPlayers() do
						local root = rootOf(player)
						local humanoid = player.Character and player.Character:FindFirstChildOfClass("Humanoid")
						if root and humanoid and root.Position.Y < surface - 2 then
							humanoid:TakeDamage(10) -- under water: 10 damage a second
						end
					end
					task.wait(1)
				end
			end)
			return function()
				running = false
			end
		end,
	},
	{
		name = "Meteor shower",
		run = function(map)
			local pivot = map:GetPivot()
			local running = true
			task.spawn(function()
				while running do
					local meteor = Instance.new("Part")
					meteor.Shape = Enum.PartType.Ball
					meteor.Size = Vector3.new(6, 6, 6)
					meteor.Material = Enum.Material.Basalt
					meteor.Position = (pivot * CFrame.new(math.random(-80, 80), 150, math.random(-80, 80))).Position
					local hitHumanoids: { [Humanoid]: boolean } = {}
					meteor.Touched:Connect(function(hit)
						local model = hit:FindFirstAncestorWhichIsA("Model")
						local humanoid = model and model:FindFirstChildOfClass("Humanoid")
						if humanoid and not hitHumanoids[humanoid] then
							hitHumanoids[humanoid] = true -- each meteor hurts a player once
							humanoid:TakeDamage(40)
						end
					end)
					meteor.Parent = map
					Debris:AddItem(meteor, 8) -- clean up so parts do not pile up
					task.wait(0.4)
				end
			end)
			return function()
				running = false
			end
		end,
	},
}

local function freshMap(): Model
	local templates = maps:GetChildren()
	local template = templates[math.random(1, #templates)] :: Model
	local map = template:Clone()
	map.Name = "CurrentMap"
	map.Parent = workspace
	return map
end

while true do
	for t = INTERMISSION, 1, -1 do
		setStatus("Intermission", t)
		task.wait(1)
	end

	local map = freshMap()
	local spawnPart = map:WaitForChild("MapSpawn") :: BasePart
	local alive: { [Player]: boolean } = {}
	for _, player in Players:GetPlayers() do
		local character = player.Character
		local humanoid = character and character:FindFirstChildOfClass("Humanoid")
		if character and humanoid and humanoid.Health > 0 then
			character:PivotTo(spawnPart.CFrame + Vector3.new(math.random(-8, 8), 4, math.random(-8, 8)))
			alive[player] = true
			humanoid.Died:Once(function()
				alive[player] = nil
			end)
		end
	end

	local disaster = DISASTERS[math.random(1, #DISASTERS)]
	for t = 5, 1, -1 do
		setStatus(`{disaster.name} is coming!`, t)
		task.wait(1)
	end
	local stop = disaster.run(map)
	for t = ROUND_TIME, 1, -1 do
		setStatus(disaster.name, t)
		task.wait(1)
	end
	stop()

	for player in alive do
		if player.Parent then -- still in the server
			local wins = player:GetAttribute("Wins")
			player:SetAttribute("Wins", (if typeof(wins) == "number" then wins else 0) + 1)
		end
	end
	setStatus("Round over", 0)
	task.wait(3)
	map:Destroy()
	for _, player in Players:GetPlayers() do
		task.spawn(player.LoadCharacterAsync, player) -- everyone back to the lobby spawn
	end
end

Wins are stored as a player attribute here; copy them into leaderstats and save them with a data store once the loop is fun. To add a disaster, add one more entry to DISASTERS: a name and a function that starts the hazard and returns how to stop it. Wind can push players with a VectorForce on their root part, an earthquake can unanchor parts of the map's buildings, a fire can spread by setting a Burning attribute on neighbouring parts.

The hard part: destruction without lag

The spectacle players come for, buildings falling apart, is the most expensive thing a Roblox server can do. Every unanchored part is simulated, and the engine also hands unanchored parts near a player to that player's computer to simulate, so a collapsing town is work for everyone. Keep it under control:

• Build to break. Make destructible buildings from a few large parts (whole wall panels, not single bricks). Ten falling panels look as dramatic as five hundred bricks and cost a fraction.
• Break a little at a time. Unanchor a few parts per second during an earthquake instead of the whole map at once.
• Clean up. Give spawned objects like meteors a lifetime with Debris:AddItem, and destroy the whole map at the end of the round. Cloning a fresh map is cheaper and more reliable than repairing the old one.
• Damage on the server. A flood that checks positions on the server works whoever simulates the water. Use Touched only for hits that need contact, like meteors.
• Test with a full server. A disaster that runs smoothly with one player can stutter with twenty. Studio's multi-client test and the Developer Console show it before players do.

Monetization that fits a disaster game

Survival games are judged on fairness: a bought item that makes you immune to every disaster empties the challenge. Sell help, not immunity:

A developer product must be granted through MarketplaceService.ProcessReceipt so a purchase is never lost; the game pass guide covers pass checks and prompts. You cannot turn on private servers and paid access at the same time. Roblox also pays creators through Creator Rewards, which replaced engagement-based payouts on 24 July 2025. Rewarded video ads, where your game qualifies, must reward a developer product and cannot be random: "start next round with a balloon" fits.

What brings players back

• Wins and streaks. A survival streak that resets on death is a reason to play one more round.
• Rare disasters. One disaster with a small chance per round becomes the one everyone talks about.
• Map and disaster updates. Because disasters are entries in a table and maps are models in a folder, each update is small to make. Announce them.
• Badges. Survive each disaster once, survive ten rounds in a row, survive on one health.
• Daily rewards. A small daily bonus to the wins multiplier or a cosmetic (daily rewards).

Build a natural disaster game with RoCode

RoCode is an independent AI agent for Roblox Studio. You describe what you want in a web chat, and its free Studio plugin writes the Luau and creates the scripts, parts and UI in the place you have open. For a disaster game it works in rounds: first a map and the round loop, then disasters one at a time, then wins and a HUD.

Build this in Studio ↗

It cannot make custom meshes, sounds or animations, publish the game, or tell you whether a disaster is too hard: you still play the rounds yourself. Free credits every day, no card needed. How RoCode builds a game.

Questions

Sources and further reading

• Roblox Creator Docs: TweenService
• Roblox Creator Docs: Instance:Clone
• Roblox Creator Docs: Debris
• Roblox Creator Docs: Network ownership
• Roblox Creator Docs: Developer products
• Roblox Creator Docs: Private servers
• Roblox Creator Docs: Creator Rewards
• RoCode guide: Round system

How the code was checked: every script on this page passes Luau's strict type checker against Roblox's API definitions (luau-lsp, 4 November 2026). A type check catches misspelt APIs and wrong types, not game logic, so playtest in Studio before you publish.