a ▁ 4 ▁Arena ). ▁However , ▁as ▁with ▁the ▁Play Station ▁ 3 , ▁digital ▁content ▁such ▁as ▁download able ▁content ▁for ▁games ▁still ▁requires ▁a ▁PS N ▁account ▁from ▁the ▁region ▁the ▁content ▁was ▁made ▁for . ▁That ▁said , ▁PS N ▁accounts ▁themselves ▁are ▁not ▁region ▁locked ▁and ▁an ▁account ▁for ▁one ▁region ▁can ▁be ▁made ▁on ▁a ▁console ▁from ▁another ▁one . ▁ ▁S ega ▁ ▁The ▁S G - 1 0 0 0 ▁does ▁not ▁have ▁region ▁lock out ▁between ▁Japanese ▁and ▁Australian ▁systems , ▁the ▁same ▁applies ▁with ▁SC - 3 0 0 0 ▁games ▁on ▁cart ridge ▁and ▁c ass ettes , ▁as ▁well ▁SF - 7 0 0 0 ▁dis ks . ▁ ▁Western ▁S ega ▁Master ▁Systems ▁have ▁a ▁different ▁shape ▁from ▁the ▁Japanese ▁cart ridge ▁conne ctor , ▁meaning ▁S ega ▁Mark ▁III ▁and ▁S G - 1 0 0 0 ▁games ▁are ▁in compatible ▁with ▁it . ▁A ▁B IOS ▁included ▁prevents ▁Japanese ▁cart rid ges ▁( both ▁Mark ▁III ▁and ▁S G - 1 0 0 0 ) ▁to ▁be ▁used ▁on ▁Western ▁systems , ▁even ▁with ▁ad ap ters . ▁The ▁S ega ▁Card ▁slot ▁on ▁these ▁systems ▁has ▁the ▁same ▁pin out ▁from ▁its ▁Japanese ▁counter part , ▁but ▁they ▁cannot ▁run ▁Japanese ▁and ▁S G - 1 0 0 0 ▁cards ▁due ▁to ▁lack ▁of ▁a ▁certain ▁code ▁in ▁the ▁R OM ▁header . ▁This ▁can ▁be ▁circum vent ed ▁by ▁removing ▁the ▁B IOS ▁IC ▁from ▁it