Tree

L-systems: a formal grammar for modeling plant growth, invented by biologist Aristid Lindenmayer in 1968.

Tap high for tall trees, tap low for shrubs.
Hold longer for bushier growth, quick tap for sparse.
Drag down to throw a seed.

Simple rules applied recursively produce organic complexity. Each tree grows differently — same grammar, different seeds.

tap to plant a seed
tap high for tall · hold for bushy

tree — L-system growth