It is smoke that surrounds you in the world covered with darkness.
The action puzzle game where you should use the smoke flow to understand a shape of a stage to go ahead.

You should look for an exit by using smokes with different characteristics. For example, you should set fire to grasses at your feet and sometimes turn gears by using making good use of smoke.
This game is based on a good plan and includes various ideas such as a peculiar world-view of burning fire and smoke, seamless stage structure, a natural enemy that emits cold waves to prevent smoke flows.