The legal status of magic mushrooms is complex.

BBC: Drugs: It's a class issue

Prof David Nutt says he has funding to research the use of the chemical psilocybin - found in fungi known as "magic mushrooms" to treat depression.

BBC: 'Absurd' drug laws 'hinder research' - Prof David Nutt

Mario, now a plumber, and joined by a lanky brother named Luigi, bounced through the Mushroom Kingdom, dodging or bopping enemies in the form of turtles, beetles, and squid, while seeking out magic mushrooms, coins, and hidden stars.

NEWYORKER: Master of Play