Early iterations of simulators in this genre include the release of EF2000 by Digital Image Design (DiD) which quickly garnered a dedicated following, including a user group that produced a detailed online manual of weapons and tactics, as well as the popular "Falcon 4.0," a detailed simulation of the USAF F-16 Fighting Falcon. Other development of these simulators includes a collaborative and specialized effort between Electronic Arts and Jane's in the 1990s, with titles such as "Jane's Longbow", "Jane's Longbow 2", "Jane's F-15" and "Jane's F/A-18".