Ysgarth 4th Edition was published in 1982 in six digest-sized books totaling 142 pages. The six books were sold in a bundle with a blue wrap-around cover.
A second printing of Ysgarth 4th Edition was performed in 1983, also including six digest-sized books with small editorial changes in one book (the book on combat). The second printing was sold in a bundle with a red wrap-around cover.
A 1984 Box Set printing included six digest-sized books and two supplements in one box.
Ysgarth 4th Edition included complete rules, substantial world background and a scenario. The edition was accompanied by the release of the Ysgarth and Uttgart series of adventure scenarios.