▁the ▁first ▁game ▁where ▁players ▁were ▁given ▁multiple ▁lives , ▁had ▁to ▁rep el ▁h ord es ▁of ▁enemies , ▁could ▁take ▁cover ▁from ▁enemy ▁fire , ▁and ▁use ▁destruct ible ▁bar riers , ▁in ▁addition ▁to ▁being ▁the ▁first ▁game ▁to ▁use ▁a ▁continuous ▁background ▁sound track , ▁with ▁four ▁simple ▁di at onic ▁desc ending ▁bass ▁notes ▁repeating ▁in ▁a ▁loop , ▁which ▁was ▁dynamic ▁and ▁changed ▁pace ▁during ▁stages , ▁like ▁a ▁heart be at ▁sound ▁that ▁increases ▁pace ▁as ▁enemies ▁approached . ▁ ▁In flu ence ▁ ▁Game ▁developers ▁including ▁Sh iger u ▁Mi y am oto ▁( cre ator ▁of ▁the ▁franch ises ▁Don key ▁Kong , ▁Super ▁Mario , ▁and ▁The ▁Leg end ▁of ▁Zel da ), ▁H ideo ▁K oj ima ▁( Met al ▁G ear ), ▁and ▁John ▁Rom ero ▁and ▁John ▁Car m ack ▁( both ▁Do om ) ▁have ▁c ited ▁Space ▁Inv aders ▁as ▁their ▁introduction ▁to ▁video ▁games . ▁Mi y am oto ▁cons iders ▁Space ▁Inv aders ▁to ▁be ▁the ▁game ▁that ▁revolution ized ▁the ▁video ▁game ▁industry . ▁De us ▁Ex ▁cre ator ▁Warren ▁Spect or ▁said : ▁" Space ▁Inv aders ▁and ▁games ▁like ▁it ▁represent ▁the ▁roots ▁of ▁everything ▁we ▁see ▁today ▁in ▁g aming . ▁It ▁represents ▁the ▁birth ▁of ▁a ▁new ▁art ▁form , ▁one ▁that ▁literally ▁changed ▁the ▁world . ▁Space ▁Inv aders ▁is ▁important ▁as ▁an ▁historical ▁arte fact , ▁no ▁less ▁than ▁the ▁silent ▁films ▁of ▁the ▁early ▁tw enti eth ▁century