it is a free open source program written in compiled freebasic and uses gui_chung and openGL.
=> flightcombat_chung.zip (zipped & unzip with 7zip)
addons => flightcombatchu/files/addon/
(22/09/2015) added flightcombat_chung_web version with realtime httpget google static maps satellite worldwide ground images directly from desktop & srtm heightmaps & openstreetmap osm data
=> flightcombat_chung_web.zip
=> flightcombat_chung_web2.zip (with full osm buildings shapes)
(20/02/2011) 3rd person plane view added
(28/02/2011) some cockpits added
(01/03/2011) spitfire,bf109, p51d, f14 added
(05/03/2011) fog added, enhanced performances
(01/08/2011) new radar, b25_lowpoly
(18/08/2011) enhanced dynamics, game easyer
(05/12/2011) select level (easy,normal,hard) added
(23/05/2012) boats on radar, shoot b25 easier
(28/05/2012) shootable towers and domes added
(29/05/2012) airports and refueling added
(31/05/2012) westUS,florida,nepal added
(01/06/2012) shootable towns added
(06/08/2012) photorealistic ground textures added (map0...map4)
(07/08/2012) keyboard.txt file added to change keys if wanted
(15/02/2013) dirt roads between towns and airports
(16/02/2013) enhanced satellite heightmaps
(18/02/2013) scalez selection added
(19/02/2013) kenya added
(22/02/2013) new large 16bits addon Europe added
(24/02/2013) many new addons to download added
(27/02/2013) TTS speech voices added
(02/03/2013) bullets impact added
(03/03/2013) supersonic flight added
(04/03/2013) sea tide effect added
(06/03/2013) ground texture map=auto added
(11/03/2013) forests added
(12/03/2013) enhanced explosions
(13/03/2013) enhanced enemy airships shooting
(14/03/2013) space1 & orbiter flight added
(16/03/2013) orbital station & target added
(19/03/2013) avatars chatbots added (go to the space station)
(22/03/2013) Moon, Mars, Io added (talk to to space hostess)
(02/04/2013) interplanetary flight added
(05/12/2013) many towns objects added , gizeh,goldengate,paris