1st edition, 1985, 50 copies, blue cover, enlarged digest size.
2nd edition, March 1985, 30 copies, blue cover, enlarged digest size.
3rd edition, May 1985, 30 copies, blue cover, enlarged digest size.
4th edition, August 1985, 30 copies, blue cover, enlarged digest size.
5th edition, January 1986, 30 copies, blue cover, enlarged digest size.
Available as a print on title, 1994, regular digest size.
1st Danger Room reprint edition, August 2005, 5 copies (3 blue, 2 red), regular digest size.