A magazine produced in England starting in the late 1980's with the final issue appearing in March 1990.
The magazine was larger than letter size and contained articles ranging widely among the popular games of that era (including articles about the early days of LARPing). Most issues contained a Scenario along with reviews, fiction, interviews, etc.
The magazine is also referred to as GM Magazine.
Many of the articles were written without a byline or credit attribution.