s ▁computer ▁and ▁later ▁port ed ▁to ▁D OS , ▁Apple ▁Mac int osh , ▁Com mod ore ▁CD TV , ▁Tur bo G raf x - CD , ▁S ega ▁CD ▁and ▁T andy ▁Video ▁Information ▁System ▁with ▁all ▁versions ▁being ▁distributed ▁on ▁CD - ROM . ▁The ▁game ▁was ▁re - re leased ▁as ▁a ▁DVD ▁for ▁use ▁with ▁a ▁standard ▁DVD ▁player ▁and ▁television ▁in ▁ 1 9 9 9 . ▁ ▁A ▁high ▁resolution ▁and ▁re - master ed ▁version ▁of ▁the ▁game ▁for ▁i Pad , ▁Microsoft ▁Windows , ▁and ▁OS ▁X ▁was ▁released ▁on ▁September ▁ 1 8 , ▁ 2 0 1 2 . ▁ ▁Prem ise ▁ ▁The ▁game ▁uses ▁live ▁actors ▁and ▁sets ▁as ▁the ▁player ▁controls ▁Sher lock ▁Hol mes ▁and ▁his ▁long time ▁partner ▁Dr . ▁Watson , ▁trying ▁to ▁solve ▁three ▁separate ▁cr imes ▁by ▁visit ing ▁various ▁locations , ▁listening ▁to ▁the ▁dialog ue , ▁reading ▁the ▁included ▁mock ▁London ▁newsp apers , ▁and , ▁when ▁the ▁player ▁gets ▁enough ▁evidence , ▁answering ▁the ▁judge ' s ▁questions . ▁ ▁Game play ▁ ▁At ▁the ▁beginning ▁of ▁each ▁case ▁a ▁full ▁motion ▁video ▁clip ▁dep ict s ▁Hol mes ▁and ▁Watson ▁meeting ▁a ▁client ▁and ▁learning ▁a ▁few ▁background ▁cl ues ▁about ▁the ▁case . ▁ ▁Then ▁the ▁player ▁must ▁visit ▁a ▁particular ▁location ▁or ▁person , ▁read ▁the ▁London ▁newsp apers ▁for ▁cl ues ▁or ▁ask ▁one ▁of ▁the ▁young ▁Baker ▁Street ▁Ir regular s ▁to ▁investigate . ▁