- last post: 01.01.0001 12:00 AM PDT
Killer App=Killer Application
Usually refering to a product of somekind that one would assume MUST be experienced. So usually it means that if you have an Xbox, Halo was the Killer App for the Xbox, cause any self respecting Xbox owner SHOULD have and have played through this "Killer" game. I would assume that now Halo 2 is the undisputed champion of Xbox Killer Appdum at the moment.