diff --git a/src/client/state/usePrefs.ts b/src/client/state/usePrefs.ts
index 608bf51..0e46c8d 100644
--- a/src/client/state/usePrefs.ts
+++ b/src/client/state/usePrefs.ts
@@ -8,7 +8,8 @@ import type { TimelineGroup } from "./lanes.ts";
 import { DEFAULT_THEME_CHOICE, type ThemeChoice } from "./theme.ts";
 import { DEFAULT_DAY_WIDTH, snapDayWidth } from "./zoom.ts";
 import { ENTRIES, newestId } from "../../shared/changelog.ts";
-import type { PerGame } from "../../shared/perGame.ts";
+import { setFor, shownFor, type PerGame } from "../../shared/perGame.ts";
+import { hiddenAfter, routinesFor, type Routine } from "../../shared/routines.ts";
 
 /**
  * Which of the two views the reader is looking at.
@@ -222,6 +223,13 @@ export interface Prefs {
   routinesOff?: LaneId[] | undefined;
   /** Games already asked "track its weekly tasks?", so the question is asked once. */
   routinesAsked?: LaneId[] | undefined;
+  /**
+   * Built-ins the reader stopped tracking one at a time, by `routine:` id —
+   * Endfield's weekly items but not its Stock Redistribution. Narrows the game
+   * rule above and never widens it; absent means none, and their ticks and
+   * numbers stay stored under the id.
+   */
+  routinesHidden?: string[] | undefined;
   /**
    * The newest changelog entry the reader dismissed (PRD F18). Absent means
    * unrecorded, not "seen nothing": first-run setup sets it, so an absent value
@@ -262,6 +270,32 @@ export function routineRule(p: Prefs): PerGame {
   return { all: p.showRoutines ?? false, on: p.routineGames, off: p.routinesOff };
 }
 
+/**
+ * What tracking one built-in, or stopping, writes (the strip's Edit panel).
+ *
+ * Stopping hides that one and nothing else. Tracking one whose game is on
+ * unhides it. Tracking one whose game is off turns the game on — the same
+ * answer the strip's question records — with its siblings hidden, because the
+ * reader asked for one item and not the game's whole list.
+ */
+export function trackRoutinePatch(p: Prefs, routine: Routine, track: boolean): Partial<Prefs> {
+  const rule = routineRule(p);
+  if (!track || shownFor(rule, routine.game)) {
+    return { routinesHidden: hiddenAfter(p.routinesHidden, routine.id, track) };
+  }
+  const { on, off } = setFor(rule, routine.game, true);
+  const siblings = routinesFor(routine.game)
+    .map((r) => r.id)
+    .filter((id) => id !== routine.id);
+  const hidden = [...(p.routinesHidden ?? []).filter((id) => id !== routine.id && !siblings.includes(id)), ...siblings];
+  return {
+    routineGames: on,
+    routinesOff: off,
+    routinesAsked: [...(p.routinesAsked ?? []).filter((g) => g !== routine.game), routine.game],
+    routinesHidden: hidden.length > 0 ? hidden : undefined,
+  };
+}
+
 export function defaults(): Prefs {
   return {
     region: guessRegion(),
@@ -396,7 +430,7 @@ export function restorePrefsValue(incoming: unknown): Prefs {
   }
 
   // Per-game exceptions and built-in tasks: string arrays, or absent.
-  for (const key of ["routineGames", "routinesAsked", "routinesOff", "choresOn", "choresOff"] as const) {
+  for (const key of ["routineGames", "routinesAsked", "routinesOff", "routinesHidden", "choresOn", "choresOff"] as const) {
     const value: unknown = result[key];
     if (value === undefined) continue;
     result[key] = Array.isArray(value)
diff --git a/src/shared/routines.ts b/src/shared/routines.ts
index f712dd7..bf19219 100644
--- a/src/shared/routines.ts
+++ b/src/shared/routines.ts
@@ -69,10 +69,34 @@ export function routinesFor(game: string): Routine[] {
 /**
  * The built-ins on screen: those of games the rule shows, less any the reader
  * made their own (`Task.from`) — the copy replaces the original while it
- * exists, and deleting the copy brings the original back.
+ * exists, and deleting the copy brings the original back — and less any they
+ * stopped tracking one by one (`prefs.routinesHidden`). Leave `hidden` out to
+ * get every built-in the reader could track, which is what settings lists.
  */
-export function activeRoutines(rule: PerGame, copiedFrom: ReadonlySet<string>): Routine[] {
-  return ROUTINES.filter((r) => shownFor(rule, r.game) && !copiedFrom.has(r.id));
+export function activeRoutines(
+  rule: PerGame,
+  copiedFrom: ReadonlySet<string>,
+  hidden: ReadonlySet<string> = new Set(),
+): Routine[] {
+  return ROUTINES.filter(
+    (r) => shownFor(rule, r.game) && !copiedFrom.has(r.id) && !hidden.has(r.id),
+  );
+}
+
+/**
+ * `prefs.routinesHidden` after the reader tracks one built-in or stops. Per
+ * item and never per game, so it moves nothing the game's switch says, and a
+ * built-in we ship later for that game still arrives. Absent when empty, like
+ * the other lists.
+ */
+export function hiddenAfter(
+  hidden: readonly string[] | undefined,
+  id: string,
+  track: boolean,
+): string[] | undefined {
+  const rest = (hidden ?? []).filter((h) => h !== id);
+  const next = track ? rest : [...rest, id];
+  return next.length > 0 ? next : undefined;
 }
 
 /**
diff --git a/test/routines.test.ts b/test/routines.test.ts
index 15d26ac..b67fb4c 100644
--- a/test/routines.test.ts
+++ b/test/routines.test.ts
@@ -7,8 +7,9 @@ import {
   routineToAsk,
   mineFrom,
   copyRoutineState,
+  hiddenAfter,
 } from "../src/shared/routines.ts";
-import { choreRule, defaults, restorePrefsValue, routineRule } from "../src/client/state/usePrefs.ts";
+import { choreRule, defaults, restorePrefsValue, routineRule, trackRoutinePatch } from "../src/client/state/usePrefs.ts";
 import { shownFor } from "../src/shared/perGame.ts";
 import { taskStatus } from "../src/shared/task.ts";
 
@@ -37,14 +38,23 @@ describe("ROUTINES", () => {
     expect(RoutineSchema.safeParse(bare).success).toBe(false);
   });
 
-  test("the first two, as sourced", () => {
-    expect(routinesFor("zzz").map((r) => [r.title, r.measure])).toEqual([
-      ["Ridu Weekly", { kind: "amount", target: 1300, unit: "points" }],
+  // Pinned to docs/superpowers/specs/2026-10-14-built-in-routines-design.md:
+  // a figure that moves here moves there, with the page that says so.
+  test("each game's, as sourced", () => {
+    const shape = (game: string): unknown[] =>
+      routinesFor(game).map((r) => [r.title, r.period, r.measure]);
+    const week = { unit: "week" as const, startsOn: 1 };
+    expect(shape("genshin")).toEqual([]);
+    expect(shape("hsr")).toEqual([]);
+    expect(shape("zzz")).toEqual([
+      ["Ridu Weekly", week, { kind: "amount", target: 1300, unit: "points" }],
     ]);
-    expect(routinesFor("endfield").map((r) => [r.title, r.measure])).toEqual([
-      ["Weekly Routine", { kind: "amount", target: 10, unit: "points" }],
+    expect(shape("endfield")).toEqual([
+      ["Weekly Routine", week, { kind: "amount", target: 10, unit: "points" }],
     ]);
-    expect(routinesFor("genshin")).toEqual([]);
+    expect(shape("wuwa")).toEqual([]);
+    expect(shape("nte")).toEqual([]);
+    expect(shape("nikki")).toEqual([]);
   });
 
   test("a routine has a status like any task", () => {
@@ -57,23 +67,37 @@ describe("ROUTINES", () => {
   });
 });
 
+const OFFERED = ROUTINES;
+const idsOf = (...games: string[]) =>
+  OFFERED.filter((r) => games.includes(r.game)).map((r) => r.id);
+const RIDU = "routine:zzz:ridu-weekly";
+
 describe("which built-ins are on", () => {
   const off = { all: false };
   test("only for games the reader said yes to", () => {
     expect(activeRoutines(off, new Set()).map((r) => r.id)).toEqual([]);
-    expect(activeRoutines({ all: false, on: ["zzz"] }, new Set()).map((r) => r.id)).toEqual(["routine:zzz:ridu-weekly"]);
+    expect(activeRoutines({ all: false, on: ["zzz"] }, new Set()).map((r) => r.id)).toEqual(idsOf("zzz"));
   });
 
   test("one the reader made their own is hidden while the copy exists", () => {
-    expect(activeRoutines({ all: false, on: ["zzz", "endfield"] }, new Set(["routine:zzz:ridu-weekly"])).map((r) => r.id))
-      .toEqual(["routine:endfield:weekly-routine"]);
+    expect(activeRoutines({ all: false, on: ["zzz", "endfield"] }, new Set([RIDU])).map((r) => r.id))
+      .toEqual(idsOf("zzz", "endfield").filter((id) => id !== RIDU));
+  });
+
+  test("one the reader stopped tracking is hidden, and nothing else moves", () => {
+    // Endfield's weekly items on, one of them not: the game's own answer is
+    // untouched, so the rest stay and a new built-in for it still arrives.
+    const rule = { all: false, on: ["zzz", "endfield"] };
+    expect(activeRoutines(rule, new Set(), new Set([RIDU])).map((r) => r.id))
+      .toEqual(idsOf("zzz", "endfield").filter((id) => id !== RIDU));
+    expect(shownFor(rule, "zzz")).toBe(true);
   });
 
   test("switched on globally, every game's — less the ones switched off", () => {
     expect(activeRoutines({ all: true }, new Set()).map((r) => r.id))
-      .toEqual(["routine:zzz:ridu-weekly", "routine:endfield:weekly-routine"]);
+      .toEqual(OFFERED.map((r) => r.id));
     expect(activeRoutines({ all: true, off: ["zzz"] }, new Set()).map((r) => r.id))
-      .toEqual(["routine:endfield:weekly-routine"]);
+      .toEqual(OFFERED.filter((r) => r.game !== "zzz").map((r) => r.id));
   });
 });
 
@@ -82,7 +106,7 @@ describe("a reader's answers from before the global switch carry over", () => {
   // and an absent `showRoutines` is the opt-in it always was.
   test("routineGames alone still means exactly those games", () => {
     const rule = routineRule({ ...defaults(), routineGames: ["zzz"] });
-    expect(activeRoutines(rule, new Set()).map((r) => r.id)).toEqual(["routine:zzz:ridu-weekly"]);
+    expect(activeRoutines(rule, new Set()).map((r) => r.id)).toEqual(idsOf("zzz"));
   });
 
   test("an install that never answered gets none", () => {
@@ -91,7 +115,8 @@ describe("a reader's answers from before the global switch carry over", () => {
 
   test("showRoutines and routinesOff are read", () => {
     const rule = routineRule({ ...defaults(), showRoutines: true, routinesOff: ["zzz"] });
-    expect(activeRoutines(rule, new Set()).map((r) => r.id)).toEqual(["routine:endfield:weekly-routine"]);
+    expect(activeRoutines(rule, new Set()).map((r) => r.id))
+      .toEqual(OFFERED.filter((r) => r.game !== "zzz").map((r) => r.id));
   });
 
   test("showChores alone still means every game's chore, and choresOff narrows it", () => {
@@ -142,6 +167,49 @@ describe("restoring prefs with the new fields", () => {
   });
 });
 
+describe("tracking one built-in, or not", () => {
+  test("stopping adds its id once; tracking again removes it; the list is absent when empty", () => {
+    expect(hiddenAfter(undefined, "routine:zzz:ridu-weekly", false)).toEqual(["routine:zzz:ridu-weekly"]);
+    expect(hiddenAfter(["routine:zzz:ridu-weekly"], "routine:zzz:ridu-weekly", false))
+      .toEqual(["routine:zzz:ridu-weekly"]);
+    expect(hiddenAfter(["routine:zzz:ridu-weekly", "routine:x:y"], "routine:zzz:ridu-weekly", true))
+      .toEqual(["routine:x:y"]);
+    expect(hiddenAfter(["routine:zzz:ridu-weekly"], "routine:zzz:ridu-weekly", true)).toBeUndefined();
+  });
+
+  test("the pref survives a restore, and junk in it is dropped", () => {
+    expect(restorePrefsValue({ routinesHidden: ["routine:zzz:ridu-weekly", 4] }).routinesHidden)
+      .toEqual(["routine:zzz:ridu-weekly"]);
+    expect(restorePrefsValue({ routinesHidden: "routine:zzz:ridu-weekly" }).routinesHidden).toBeUndefined();
+    expect(restorePrefsValue({}).routinesHidden).toBeUndefined();
+  });
+});
+
+describe("tracking a built-in from the strip", () => {
+  const ridu = routinesFor("zzz")[0]!;
+
+  test("stopping hides that one and leaves the game's answer alone", () => {
+    const p = { ...defaults(), routineGames: ["zzz"] };
+    expect(trackRoutinePatch(p, ridu, false)).toEqual({ routinesHidden: [ridu.id] });
+  });
+
+  test("tracking one of a game that is on just unhides it", () => {
+    const p = { ...defaults(), routineGames: ["zzz"], routinesHidden: [ridu.id] };
+    expect(trackRoutinePatch(p, ridu, true)).toEqual({ routinesHidden: undefined });
+  });
+
+  test("tracking one of a game that is off turns the game on with only that one", () => {
+    // The reader asked for one item, not the game's whole list: its siblings
+    // arrive hidden, and the game counts as asked so the strip does not ask again.
+    const p = { ...defaults(), showRoutines: false };
+    const patch = trackRoutinePatch(p, ridu, true);
+    const after = { ...p, ...patch };
+    const shown = activeRoutines(routineRule(after), new Set(), new Set(after.routinesHidden ?? []));
+    expect(shown.map((r) => r.id)).toEqual([ridu.id]);
+    expect(after.routinesAsked).toContain("zzz");
+  });
+});
+
 describe("making a built-in your own", () => {
   test("copies its shape and remembers where it came from", () => {
     const ridu = routinesFor("zzz")[0]!;