In-Game Modules (IGMs) are small software extensions written by third-party developers that add functionality to "LORD". A number of these were created and widely distributed. IGM software was first developed on the Amiga, and then ported to MS-DOS. Some IGMs were written to allow a "cheating" style of game play, and others have presented bugs or loopholes to be exploited by players. The current maintainer of the "LORD" software, has introduced a scripting language called "Lady" in order to allow smoother development of game extensions.