diff --git a/src/client/components/CustomForms.tsx b/src/client/components/CustomForms.tsx
index c6b1700..5afc329 100644
--- a/src/client/components/CustomForms.tsx
+++ b/src/client/components/CustomForms.tsx
@@ -215,6 +215,16 @@ export function EventForm({
         </select>
       </label>
 
+      {/* Otherwise the list is nine games we track and no sign of why none of
+          them is theirs — the reader who came here to add a game we don't cover
+          has no way of knowing they need to make it first. */}
+      {Object.keys(customGames).length === 0 && (
+        <p className="mt-1.5 text-xs leading-relaxed text-faint">
+          These are the games we track. To file this under a game of your own,
+          cancel and add the game first.
+        </p>
+      )}
+
       <label className={`${labelClass()} mt-3`}>
         What is it
         <input
diff --git a/src/client/sw.js b/src/client/sw.js
index b6ea8b5..cf32fdb 100644
--- a/src/client/sw.js
+++ b/src/client/sw.js
@@ -14,7 +14,11 @@
  * Bump CACHE_VERSION on any shell change; old caches are deleted on activate.
  */
 
-const CACHE_VERSION = "event-clock-v1";
+// v2: reader-authored games and events (PRD F13) changed main.js. The shell is
+// served cache-first, so without this bump a returning reader keeps the old
+// bundle and none of the new UI reaches them — the page looks unchanged and
+// nothing anywhere says why.
+const CACHE_VERSION = "event-clock-v2";
 // Paths are derived from the registration scope, so the same worker is
 // correct at a domain root and under a subpath (GitHub Pages) alike.
 const BASE = new URL("./", self.registration.scope);