It lets you bias the maze to make interesting designs at least: https://jsbin.com/betediceyu/edit?html,output https://jsbin.com/betediceyu/edit?html,output (yo

It lets you bias the maze to make interesting designs at least: https://jsbin.com/betediceyu/edit?html,output https://jsbin.com/betediceyu/edit?html,output (you might have to click "Run with JS" to make it work properly)