▁u pr ight ▁ar cade ▁cabinet ▁and ▁a ▁so - called ▁" cock tail - table " ▁cabinet ; ▁following ▁its ▁usual ▁practice , ▁T ait o ▁named ▁the ▁co ck tail ▁version ▁T . T . ▁Space ▁Inv aders ▁(" T . T ." ▁for ▁" table - top "). ▁Mid way ▁released ▁its ▁u pr ight ▁version ▁a ▁few ▁months ▁later ▁and ▁its ▁co ck tail ▁version ▁several ▁months ▁after ▁that . ▁The ▁cabinet ▁art work ▁featured ▁large ▁hum ano id ▁mon sters ▁not ▁present ▁in ▁the ▁game ; ▁N ish ik ado ▁attributes ▁this ▁to ▁the ▁artist ▁bas ing ▁the ▁designs ▁on ▁the ▁original ▁title ▁of ▁" Space ▁Mon sters ", ▁rather ▁than ▁referring ▁to ▁the ▁actual ▁in - game ▁graphics . ▁In ▁the ▁u pr ight ▁cabin ets , ▁the ▁game ▁graphics ▁are ▁generated ▁on ▁a ▁hidden ▁C RT ▁monitor ▁and ▁reflected ▁toward ▁the ▁player ▁using ▁a ▁semi - trans parent ▁mirror , ▁behind ▁which ▁is ▁mounted ▁a ▁pl astic ▁cut out ▁of ▁a ▁moon ▁bol ted ▁against ▁a ▁painted ▁star ry ▁background . ▁The ▁back drop ▁is ▁visible ▁through ▁the ▁mirror ▁and ▁thus ▁appears ▁" be hind " ▁the ▁graphics . ▁Both ▁T ait o ' s ▁and ▁Mid way ' s ▁first ▁Space ▁Inv aders ▁versions ▁had ▁black - and - white ▁graphics ▁with ▁a ▁transparent ▁colored ▁overlay ▁using ▁stri ps ▁of ▁orange ▁and ▁green ▁c ello ph ane ▁over ▁certain ▁port ions ▁of ▁the ▁screen ▁to ▁add ▁color ▁to ▁the ▁image . ▁Later ▁Japanese ▁releases ▁used