Additional "rule packs" can be downloaded to (partially) support Call of Cthulhu (versions 5.5 and 6.0), Walker in the Wastes, 1930's Antarctic Explorer, Delta Green, 1920s Investigator Companion, Dreamlands, etc.
Additional language files are available that provide partial language localization of the generator. The extent of the translation varies by language pack. Available languages include French, German, Italian, and Spanish.
Interested users can also create custom "rule packs" with the ByakheeScript process.