This article is a stub. 
You can help The Blockheads Wiki expanding it.

Light is both a natural and Blockhead-made thing.

Effects

Trees seem to grow more fruit in light.

A Blockhead's Environment Bar will tend to reduce in low light.

Sources

Most natural light comes from the sun in the day and the night has some light from stars and the moon. Weather may reduce the available light.

Some naturally spawned objects such as unmined gold ore may appear to give off light. Until a Blockhead uncovers the area where it is, they don't shine on their own. If a light source uncovers gold ore and then is removed, it will still give off light.

A Blockhead seems to give off light (not much but a player may still move them about 2 blocks at a time).

Natural Light Sources

Artificial Light Sources