[3] The following year, Zeb Cook adapted the rules from Marvel Super Heroes for a new role-playing game, Conan.

This boxed set, with cover art by Jeffrey Butler and interior art by Jeff Easley,[4] was designed for players age 10 and up and contained a full-color map, a 32-page rule book, a 16-page reference guide of talents, weaknesses, and charts, and a 48-page notebook about the land of Hyboria plus two 10 sided dice.

TSR produced three adventures for the game in 1985: Mark Krawec, a member of the RPGnet community, recovered the system from the past in 2007, named it ZeFRS (Zeb's Fantasy Roleplaying System[5]) and published a free PDF document where the game mechanics had been completely expurgated from any licensed Conan material.

[8] Mike Dean reviewed Conan RPG for Imagine magazine, and stated that "In conclusion, this game has some interesting concepts but is lacking in certain respects, notably the magic system and the slant towards the younger gamer.

Henderson concluded by giving the game a rating of 3 out of 4, saying, "If you can enjoy the freedom of using an easily-learned rules set that leaves plenty of options, Conan is great.

It makes a pleasant break from more detailed fantasy campaigning and it is certain to have its players rereading the Conan stories in search of inspiration.