This game, developed by the Russian firm "Flying Legends" (which would later become the well known "Eagle Dynamics"), simulates the famous Russian fighter SU-27 Flanker. It's a hardcore sim focusing on the flying model. Nice touch (though some gamers might be put off by this) is that the cockpit is true to life and thus, all cockpit meters, dials and signs are in Russian. All the in-game text (like the menus and scenario editor) however are in english (or another language; like the German version is in German).
The game comes with a solid simple scenario builder. The action in the game is in the skies of Crimea (below Ukraine).