The combat rules in the original fantasy role-playing game Dungeons & Dragons, published by TSR in 1974, used the traditional wargaming combat system from the previously published Chainmail, which measured movement and distances on a sand table in inches.
In recognition of that, FGU published a set of combat rules for miniatures using a 1" hex grid rather than sand-table measurements.
Archworld is a 76-page stapled book with cardstock cover[3] designed by Sheila & Mike Gilbert and published by FGU in 1977.
[3] Space Gamer noted that Archworld is designed to replace other combat systems that require too much paperwork, and called the interior art "excellent".
[3] In the February 1978 issue of Craft, Model and Hobby Industry, Rick Mataka called Archworld's combat rules "well-written with many examples to aid the reader in understanding the system being employed."