▁Play Station ▁ 2 ▁in ▁ 2 0 0 4 . ▁ ▁A ▁third ▁sequ el , ▁called ▁Air force ▁D elta ▁Altern ative , ▁was ▁released ▁for ▁Mobile ▁Ph ones ▁in ▁ 2 0 0 7 ▁in ▁Japan ▁only . ▁ ▁Game ▁features ▁ ▁Story ▁Play ers ▁take ▁control ▁of ▁a ▁mer cen ary ▁that ▁has ▁been ▁contract ed ▁to ▁complete ▁a ▁number ▁of ▁strateg ic ▁military ▁miss ions . ▁Each ▁mission ▁completed ▁ear ns ▁the ▁player ▁money , ▁and ▁the ▁more ▁money ▁that ▁is ▁accum ulated , ▁the ▁more ▁s oph istic ated ▁aircraft ▁the ▁player ▁can ▁purchase . ▁Play ers ▁select ▁from ▁a ▁my ri ad ▁of ▁f igh ters ▁and ▁take ▁to ▁the ▁sk ies ▁to ▁defend ▁a ▁newly ▁independent ▁Republic ▁of ▁La con ia ▁from ▁its ▁many ▁enemies — for ▁fame , ▁for ▁glory , ▁and ▁most ▁of ▁all : ▁for ▁a ▁price . ▁ ▁The ▁first ▁mission ▁involves ▁a ▁pre empt ive ▁strike ▁against ▁numerous ▁f ighter ▁plan es ▁that ▁are ▁planning ▁to ▁bomb ▁the ▁La con ian ▁capital ▁city ▁of ▁N ax os . ▁ ▁The ▁game ▁cent ers ▁around ▁the ▁Feder ated ▁Republic ▁of ▁D z av ail ar . ▁Eth nic ▁t ension ▁and ▁religious ▁debate ▁have ▁caused ▁the ▁Republic ▁to ▁split ▁into ▁independent ▁states . ▁The ▁def ens eless ▁Republic ▁of ▁La con ia ▁is ▁in ▁dire ▁need ▁of ▁military ▁support . ▁Reb els ▁from ▁the ▁former ▁Feder ated ▁Republic ▁of ▁D z av ail ar ▁have ▁decided ▁to ▁reun ite ▁a ▁territory