>>712975541 (OP)Wolfenstein modders. They put it in Carmack's head that players wanted to mod their games and that supporting modding could extend a game's life and popularity, so when they made Doom, id Software came up with the WAD system to make it easier to mod, and when the fanmade Doom Editor Utility and WAD editors popped up shortly after Doom's release, id Software was tolerant of those efforts, and thus was birthed the first real modding scene in gaming history.