The figure shows how the game reacts to in-game errors, as a result of which it flies. Many of modmeykerov confirm this judgment, because each mode on 'Stalker' or other interference in the internal environment of the game lead to the flight of the program XR_ 3DA.exe and subsequent problems with the game. The cause of the failure can serve many factors, because even at the announcement of the game in 2004, developers said that the game engine is very unstable and vulnerable to code errors, as well as foreign interference (mods, third-party patches, hacking). In order to fully understand the situation and further prevent it, it is necessary to carefully examine the topic. The error 'XR_ 3DA.exe does not work' had to be seen at least once in the life of those who ran one of the games 'STALKER'. In 2007, the cult game 'STALKER: Shadow of Chernobyl' was released, which was remembered for its unique atmosphere, beautiful graphics, as well as numerous departures due to the unstable work of the X-RAY engine.