Advanced Rules is a collection of house rules for the Mothership Sci-Fi Horror RPG 1e, written by myself, Violet Ballard, and a few other Mothership designers. It is modeled after the "Book 2" of advanced rules that accompanied many old Game Designers' Workshop releases.
These are rules that I have developed as I’ve played my home game, written my own modules, and published modules with other people. Each new rule is small, but as a whole they provide an alternate experience focused more on player challenge compared to standard Mothership 1e.
These house rules also develop solo and Wardenless play as viable alternatives to the usual, Warden-led experience.
In the interest of community, Advanced Rules is licensed under a Creative Commons Attribution 4.0 International license. This means you can use the text from these rules in your own publications, including commercial ones, you just need to attribute the text to the correct authors. This license only applies to the text as it appears as published here, and not to the original publications to which the original authors still hold their copyrights.