diff --git a/.browserslistrc b/.browserslistrc
new file mode 100644
index 0000000..c71c8b9
--- /dev/null
+++ b/.browserslistrc
@@ -0,0 +1,11 @@
+# https://github.com/browserslist/browserslist#readme
+
+>= 0.5%
+last 2 major versions
+not dead
+Chrome >= 60
+Firefox >= 60
+Firefox ESR
+iOS >= 12
+Safari >= 12
+not Explorer <= 11
diff --git a/README.md b/README.md
index bae3009..cef4b9b 100644
--- a/README.md
+++ b/README.md
@@ -9,3 +9,18 @@ Console commands to start working
 ### Screenshot
 
 ![Screenshot](./screenshot.png)
+
+### Features
+
+* Autosaving (with a restart button)
+* Keyboard support (press 1-9 to select 1th-9th choices, 0 to choose 10th)
+* Great game performance (all JS is ~200Kb in size with Inkjs runtime)
+* For authors: `npm watch` will auto-recompile the game on changes to JS or JSON
+
+### Compatibility
+Compatible browsers: Chrome >= 60, Firefox >= 60, iOS >= 12, Safari >= 12.
+
+If you want to support older browsers (released before 2018),
+you'll have to rewrite the CSS.
+I use Bootstrap 5 because it's a good framework but it's also very modern.
+Other than that, the code depends only on inkJS and jQuery so it should comfortably support IE9+