Heroes of Might and Magic III: In the Wake of Gods is a massive modification of HMMIII inventing script language and generally intended to stretch the boundaries of the original game capabilities. HMMIII WoG presents new objects with various properties, drastically changed and improved creature abilities and a wide variety of custom scripts for altering the gameplay.
Another popular WoG option, Commanders represent the element of HoMM4 gaming mechanics, being a single powerful unit capable of leveling up on its own, with lots of different skills and abilities to choose. Like any other WoG option, this script can be enabled or disabled.