Changa is intended for text usage, with its short ascenders and descenders and a set of lowercase letters inscribed within a square. The uppercase letters gains slightly more in height form a single height so that typographers can set text with minimum line spacing.
Changa One is also available, the initial style that is an extra-bold sister family intended for display usage.
In November 2019, it was updated with a Variable Font "Weight" axis.
To contribute, see github.com/googlefonts/changa-vf.