Gygax had developed an interest in miniature games, so he and Jeff Perren designed a set of medieval miniatures rules called 'Chainmail' which was first published in the Castle & Crusade Society's fanzine The Domesday Book.
dʒˈaɪɡæks hæd dɪvˈɛləpt ɐn ˈɪntɹɛst ɪn mˈɪnɪtʃɚ ɡˈeɪmz, sˌoʊ hiː ænd dʒˈɛf pˈɛɹən dɪzˈaɪnd ɐ sˈɛt ʌv mˈɛdɪˌiːvəl mˈɪnɪtʃɚz ɹˈuːlz kˈɔːld tʃˈeɪnmeɪl wˌɪtʃ wʌz fˈɜːst pˈʌblɪʃt ɪnðə kˈæsəl ænd kɹuːsˈeɪd səsˈaɪəɾiz fˈænziːn ðə dˈoʊmsdeɪ bˈʊk.