Quick question, how does an html game save?
Does it have a var or some dom element that it compiles, then asks you to save a file to disk?
Because from what I know, html files cannot directly alter files on host disk.
edit: another question, which version and tier is posted on this site?
[little confused about tiers and patreon-vs-subscribestar, before I choose to download the game]
To answer your second question first, the version currently hosted here is the 0.8.1 public. Subscribestar/patreon people get early access to builds, but afaik the public release is currently caught up and there's no early build out yet. People who subscribe at Tier2+ also get access to a special version of the game containing a unique, semi-customizable slave along with a unique questline that allows you to found your own great house. (There isn't really any content for that yet afaik.) Tier4+ get very early access to alpha builds, then after a little while (long enough to fix bugs and such that peoploe report)Tier 2+ get access, then after another period of time (during which Grim tends to keep adding and updating content) the build gets released to the public.
Patreon subs get the same benefits, but due to the nature of the game the subscribestar is more active, as Patreon has been known to pull down games for little to no reason. The Patreon is really just there as an alternative for SS.
As for how the game saves, I can't really answer anything on the coding side but I do know that the game, like most HTML games, has two save systems. The in-game save slots save to your browser's local storage, and will be wiped if you clear your browser cache. There's also a button to save a file to disk as you had mentioned, which is much more reliable and won't be wiped if you accidentally clear your browser cache or your browser does it automatically.