'Doshin' appears at dawn and disappears into the dusk skies.
He seems to be an incarnation of the sun.
Game day-time lasts for 30 minutes in real time.
In the limited time available, the player must choose a theme and behave accordingly.

'Doshin' is a giant, but on first appearance is a surprisingly small giant.There are 3 ways to increase 'Doshin's' size.1.
Collecting hearts - When Doshin performs a human-friendly action, the humans will give him a heart.
Once the heart has completely circled the screen, 'Doshin' will

Collecting skulls - When Doshin performs an action not friendly to humans, the humans will give him a skull.
Once the skull has completely circled the screen, 'Doshin' will

grow in size.3

Absorbing 'Paradise' energy - 'Paradise' is the area on the island densely covered by trees.
If 'Doshin' lingers in this area, he will grow in size.
But as he grows, the surrounding trees will disappear.

'Doshin' can grow in these 3 ways.
The bigger he grows, the more dynamic the change in the island's terrain.
As Doshin's strides increase in length, so does his speed, and negotiating the island becomes easier.
However, if 'Doshin' gets too big, he is more likely to tread on humans or destroy their buildings.
Care is needed, as falling over in the centre of a settlement would be a disaster.
After 30 minutes, evening descends, and the giant vanishes from the island.
The next time the game is played, he will appear as usual, but will have reverted to his original size.
At this point the player can continue with the previous strategy, or try something different.
This restricted cycle means that the player plays a game of repetition and difference.
The data for 49 generations of giants will be retained, but the island data carries on from the previous giant.