readme: updated list of features

README.md

@@ -34,8 +34,13 @@ Source: https://www.programmfabrik.de/en/assignment-frontend-backend-developer-j
 ## Features
 
 * Does not have any client-side dependencies, does not use any third-party libraries on the client.
-* Works in modern browsers as a single-page application, in offline mode.
-* Works in older browsers / browsers with JS disabled as a plain old multi-page application (requiring internet connection).
+* Works in modern browsers (which includes at least 96% overall and at least 98% desktop userbase;
+    includes Chrome since 2017, Firefox since 2018, Safari since 2017)
+    as a single-page application, in offline mode.
+* Works in older browsers / browsers with JS disabled (which, together with the previous point,
+    covers 99.9%+ overall userbase, including text-based browsers and presumably IE6 and probably IE5)
+    as a plain old multi-page application (requiring internet connection).
+* Doesn't use browser detection / sniffing, instead gracefully degrading depending on the feature set available.
 * Hopefully more accessible than a typical single-page application.
 * Supports multiple games on the same page, playable at the same time, concurrently and independently.
 * Supports different game rules (the provided main page has two games with different rule sets).
@@ -84,6 +89,9 @@ I wanted to minimise the size of the resulting frontend application,
 and the best way to reduce the number of dependencies on frontend is to not have any dependencies,
 to write vanilla JS.
 
+Also, I wanted to make this work everywhere (or almost everywhere),
+in the spirit of GOV.UK public services: https://shkspr.mobi/blog/2021/01/the-unreasonable-effectiveness-of-simple-html/
+
 I've been hearing a lot about Web Components lately,
 so I decided to use this as an opportunity to learn more about them.
 But there are some major design choices to be made with Web Components too,