Halo 3 : ODST , or Halo 3 ODST ( `` of the abbreviation , Halo `` serie halo '' , Halo 3 , 'Game Halo 3 ' , and ODST , ODST Hellijumpers , `` Orbital Drop Shock Troopers '' ) commonly known as Halo : ODST or Halo ODST , and also known as Halo 3 : Recon or Halo 3Recon , formerly Halo : Recon , or Halo Recon , is a 2009 first-person shooter video game developed by Bungie and published by Microsoft Game Studios .
Halo 3 : ODST is also known as Halo 3 : Recon .