Digital Combat Simulator World (DCS World) is a free-to-play digital battlefield game, focusing on simulation of military aircraft. It includes the FREE Su-25T and TF-51D aircraft and it is extensible through additional DCS modules as well as user-made add-ons and mods.
DCS World includes a vast mission area of the Caucasus region that encompasses much of Georgia - the location of the Russian invasion of Georgia in 2008.
Two seat Jet trainer aircraft L-39 is intended for basic and advanced pilot training in visual and instrument flight rules weather conditions, day and night and also for combat use against air and ground targets.
Its development started in the middle 60s of the last century by the Czech "Aero Vodochody". In the 70s the aircraft has entered service and is still in the operational use in over 30 countries worldwide.