Sliding knife model of division, perhaps? By request of [url=https://twitter.com/Mrs_Scott_SHS]Mrs. Scott [/url].
Users can either use the timed continuous mode or "practice mode" which allows the knife to move freely.
Change the [color=#b20ea8]level[/color] for new shapes.
The "Fairness score" uses chi-squared. Suggestions for a transformation or a better metric?
Shortly after I made this, I came across [url=http://christianp.github.io/building-houses/] a similar game. [/url]