▁characters . ▁The ▁game ▁ranked ▁twice ▁in ▁the ▁national ▁top ▁ 5 0 ▁for ▁best - s elling ▁PC ▁games ▁sold ▁in ▁Japan . ▁ ▁Much ▁of ▁the ▁staff ▁that ▁created ▁the ▁game ▁later ▁became ▁the ▁found ing ▁members ▁of ▁the ▁visual ▁novel ▁brand ▁Key . ▁Moon ▁was ▁the ▁starting ▁point ▁for ▁Key ' s ▁orig ins , ▁and ▁was ▁the ▁first ▁time ▁the ▁principal ▁Key ▁team ▁was ▁formed . ▁A ▁novel ▁based ▁on ▁the ▁game ▁written ▁by ▁Mid ori ▁T ate y ama ▁was ▁released ▁in ▁July ▁ 1 9 9 8 ▁by ▁Mov ic . ▁The ▁game ' s ▁original ▁sound track ▁was ▁released ▁bund led ▁with ▁D ō se i ''' s ▁sound track ▁in ▁August ▁ 2 0 0 0 ▁at ▁Com ik et ▁ 5 8 ; ▁D ō se i ▁was ▁T act ics ' ▁first ▁game . ▁Moon ▁has ▁been ▁referenced ▁in ▁other ▁media ▁not ▁directly ▁related ▁to ▁the ▁game , ▁such ▁as ▁in ▁T act ics ' ▁third ▁game ▁One : ▁K ag ay aku ▁K is ets u ▁e , ▁and ▁in ▁the ▁second ▁an ime ▁adaptation ▁of ▁Key ' s ▁first ▁game ▁Kan on . ▁ ▁Game play M oon ▁is ▁a ▁drama ▁and ▁horror ▁visual ▁novel ▁in ▁which ▁the ▁player ▁assumes ▁the ▁role ▁of ▁I k umi ▁Am as awa . ▁Much ▁of ▁its ▁game play ▁is ▁spent ▁on ▁reading ▁the ▁story ' s ▁narr ative ▁and ▁dialog ue . ▁Moon ▁follows ▁a ▁branch ing ▁plot ▁line ▁with ▁multiple ▁end ings ,