Storm Cellar · Thunderhead

Thunderhead

A thunderstorm starts as little clouds over warm ground, growing as they merge. You are a little gust: puff the clouds together, and when one grows big enough it towers into a thunderhead.

Warming the ground…

Thunderhead

Move the gust with the mouse or the arrow keys, and puff with a click or Space. On a phone, tap where to puff.

Today

You have not played today.

Play as often as you like: your best of the day counts. The weather blows a new way at your midnight, the same for everyone.

Help from your tier

How to play

A puff pushes every cloud near the gust away from it. Big clouds are heavier and move less.
Clouds that touch merge into one, bigger and slower.
Ten little clouds' worth towers into a thunderhead. It scores twelve times its size squared, so merging a little bigger before it tips over pays: ten scores 1,200, eleven 1,452.
A cloud left alone too long rains itself away, and one blown out of the sky is lost. New ones rise from the thermals over the warm ground.

A round lasts ninety seconds. 3,000 brings the Thunderhead stamp.