▁online ▁while ▁playing ▁the ▁game . ▁An ▁additional ▁third ▁was ▁later ▁released ▁on ▁October ▁ 1 0 , ▁ 2 0 0 7 ▁without ▁the ▁inclusion ▁of ▁a ▁USB ▁head set , ▁which ▁was ▁pr iced ▁at ▁US $ 3 9 . 9 9 . ▁Both ▁ret ail ▁versions ▁feature ▁extra ▁content ▁such ▁as ▁behind - the - sc enes ▁developer ▁inter views , ▁concept ▁art ▁and ▁tra ilers . ▁War h awk ▁was ▁re - re leased ▁as ▁a ▁Great est ▁H its ▁title ▁on ▁July ▁ 2 8 , ▁ 2 0 0 8 ▁for ▁$ 2 9 . 9 9 . ▁ ▁Up dates ▁and ▁exp ans ions ▁ ▁Add itional ▁download able ▁content ▁( D LC ) ▁has ▁been ▁released , ▁with ▁more ▁announced , ▁since ▁the ▁game ' s ▁launch . ▁Exp ans ions ▁include ▁new ▁maps , ▁weapon ▁up gr ades ▁and ▁character ▁custom ization ▁options . ▁The ▁D ual S ho ck ▁ 3 ▁controller ▁became ▁compatible ▁with ▁the ▁game ▁upon ▁the ▁release ▁of ▁the ▁version ▁ 1 . 2 0 ▁patch . ▁Inc ogn ito ▁has ▁stated ▁that ▁any ▁future ▁development ▁on ▁the ▁incomplete ▁single ▁player ▁campaign ▁would ▁only ▁be ▁released ▁as ▁a ▁separate ▁product , ▁and ▁not ▁as ▁an ▁expansion ▁to ▁the ▁current ▁game . ▁War h awk ▁updates ▁are ▁free , ▁but ▁expansion ▁pack s ▁are ▁sold ▁online ▁for ▁a ▁price . ▁Up dates ▁are ▁mand atory ▁install ations ▁that ▁must ▁be ▁completed ▁in ▁order ▁to ▁play ▁the ▁game . ▁Exp ansion ▁pack