▁or ▁early ▁printed ▁books ." ▁Several ▁publications ▁as cribed ▁the ▁expansion ▁of ▁the ▁video ▁game ▁industry ▁from ▁a ▁novel ty ▁into ▁a ▁global ▁industry ▁to ▁the ▁success ▁of ▁the ▁game . ▁Edge ▁magazine ▁attributed ▁the ▁shift ▁of ▁games ▁from ▁bars ▁and ▁am usement ▁arc ades ▁to ▁more ▁main stream ▁locations , ▁such ▁as ▁restaur ants ▁and ▁department ▁stores , ▁to ▁Space ▁Inv aders . ▁Its ▁popular ity ▁was ▁such ▁that ▁it ▁was ▁the ▁first ▁game ▁where ▁an ▁ar cade ▁machine ' s ▁owner ▁could ▁make ▁up ▁for ▁the ▁cost ▁of ▁the ▁machine ▁in ▁under ▁one ▁month , ▁or ▁in ▁some ▁places ▁within ▁one ▁week . ▁ ▁Space ▁Inv aders ▁also ▁moved ▁the ▁g aming ▁industry ▁from ▁P ong - in sp ired ▁sports ▁games , ▁ground ed ▁in ▁real - world ▁situations , ▁towards ▁fant ast ical ▁action ▁games . ▁Space ▁Inv aders ▁helped ▁action ▁games ▁become ▁the ▁dominant ▁genre ▁in ▁arc ades ▁and ▁on ▁cons oles . ▁Gu in ness ▁World ▁Records ▁considered ▁Space ▁Inv aders ▁one ▁of ▁the ▁most ▁successful ▁ar cade ▁shooting ▁games ▁by ▁ 2 0 0 8 . ▁In ▁describing ▁it ▁as ▁a ▁" sem inal ▁ar cade ▁classic ", ▁I GN ▁listed ▁it ▁as ▁the ▁number ▁eight ▁" class ic ▁shoot ▁' em ▁up ". ▁Space ▁Inv aders ▁set ▁the ▁template ▁for ▁the ▁shoot ▁' em ▁up ▁genre . ▁Its ▁world wide ▁success ▁created ▁a ▁demand ▁for ▁a ▁wide ▁variety ▁of ▁science ▁fiction ▁games , ▁insp iring ▁the ▁development ▁of ▁ar cade ▁games , ▁such ▁as ▁At