▁various ▁Om ega ▁Te ch , ▁powerful ▁techn ological ▁devices ▁that ▁could ▁possibly ▁back fire ▁on ▁those ▁that ▁used ▁them . ▁Some ▁ 4 th ▁edition ▁rules ▁enh anc ements ▁for ▁the ▁setting ▁include ▁new ▁damage ▁types ▁such ▁as ▁" Rad iation ", ▁G amma ▁World - specific ▁skills , ▁and ▁increased ▁le th ality . ▁Despite ▁these ▁differences , ▁it ▁is ▁possible ▁to ▁use ▁characters ▁and ▁mon sters ▁from ▁a ▁D & D ▁game ▁in ▁G amma ▁World ▁and ▁vice ▁vers a . ▁ ▁History ▁ ▁First ▁Edition ▁( 1 9 7 8 ) ▁The ▁original ▁G amma ▁World ▁box ed ▁set ▁( cont aining ▁a ▁ 5 6 - page ▁rule book , ▁a ▁map ▁of ▁a ▁dev ast ated ▁North ▁America , ▁and ▁dice ) ▁was ▁released ▁in ▁ 1 9 7 8 . ▁ ▁T SR ▁went ▁on ▁to ▁publish ▁three ▁access ories ▁for ▁the ▁ 1 st ▁edition ▁of ▁the ▁game : ▁ ▁G W 1 , ▁Leg ion ▁of ▁Gold ▁by ▁Gary ▁G yg ax , ▁Luke ▁G yg ax , ▁and ▁Paul ▁Re iche ▁III ▁G W 2 , ▁Fam ine ▁in ▁Far - Go ▁by ▁Michael ▁Price ▁G amma ▁World ▁Ref eree ' s ▁Screen ▁ ▁Gren ad ier ▁M ini atures ▁also ▁supported ▁the ▁game , ▁with ▁a ▁line ▁of ▁lic ensed ▁mini atures . ▁ ▁At ▁least ▁one ▁other ▁T SR ▁product ▁was ▁announced ▁-- ▁Met am orph osis ▁Al pha ▁to ▁Om ega , ▁an ▁adaptation ▁of ▁Met am orph osis ▁Al