Open ERT File
The ERT file extension is used as a script for Heroes of Might and Magic 3.
About Heroes of Might and Magic 3
Heroes of Might and Magic III is a strategy game developed by New World Computing originally released for Microsoft Windows by The 3DO Company in 1999.
Then, from 1999, the game was ported to other systems and consoles.
The ERT file stores a type of script written with functions specific to the game's characters and characters, therefore, this type of file cannot be opened by the user, since the game works with it automatically.