Wildfire Sim

Spring Clear 0.50 t0 # 1x click: missile

tick

burning

burned

trees left

buildings

population

beasts

weather

Clear

all quiet

Run

Speed4 t/s

New valley

Map size200 × 200

Max living towns8

Tree density0.65

Set the valley you want, then New Forest makes it. Up to 500 wide: a big valley holds more towns, takes a moment to make, and above 300 runs slower at the highest speeds.

Valley seed

Every load and every New Forest rolls a fresh seed. Same seed, same valley. Copy link to share this one.

Save / Load

Saves live in this browser's storage on this device. Clearing site data removes them, and they do not follow you to another device or browser: export a file for that.

Ignite

Blast radius2

Dispatch

crews0

engines-

air sorties-

Settlements

no towns

Click a town for its chronicle.

History

hide dead towns

Sand plots: every town is a layer, stacked, from its founding to its end. Click a town to hide it, double-click to see it alone.

Achievements

World

Weather

Regrowth rate1.0

Sprawl troubles start at radius8

Fire

Spread probability0.30

Neighbors

Ember spotting

Wind

Wind strength0.5

Terrain

Each tick, every burning cell tries to ignite each neighbor with P = spread × fuel factor × wind factor. Grass catches fast and burns out quickly. Big trees resist ignition but burn for a long time. Burning trees can throw embers downwind. Towns rally once fire comes within sight: crews dig firebreaks, engines spray water, and a rare air tanker drops retardant. They don't always win. Between fires the forest grows back, towns expand along their roads until they hit the size cap, build stations and buy engines, and a prosperous town may open an airstrip. Weather drifts between clear, drought, rain and storms, and storms bring lightning. Settlers wander in now and then. And every town has that one person.