diff --git a/client/src/i18n/locales/en.ts b/client/src/i18n/locales/en.ts
index e89ad07e..7df5e449 100644
--- a/client/src/i18n/locales/en.ts
+++ b/client/src/i18n/locales/en.ts
@@ -650,6 +650,8 @@ queue_will_mount: "mount after upload",
 "pkglib.footer.count": "{n} packages",
 "pkglib.footer.size": "{size} on PS5",
 "pkglib.clearFinished": "Clear finished ({n})",
+"pkglib.installAll": "Install all",
+"pkglib.installAll.hint": "Install every staged package, base games before updates and DLC",
 "pkglib.clearAll": "Clear all",
 "pkglib.clearAll.confirmTitle": "Delete all staged packages?",
 "pkglib.clearAll.confirmBody": "This permanently deletes all {n} staged .pkg file(s) from the PS5. Installed games are not affected.",
diff --git a/client/src/screens/InstallPackage/index.tsx b/client/src/screens/InstallPackage/index.tsx
index dc41d3e4..0294cadf 100644
--- a/client/src/screens/InstallPackage/index.tsx
+++ b/client/src/screens/InstallPackage/index.tsx
@@ -298,11 +298,13 @@ export default function InstallPackageScreen() {
   const loading = usePkgLibrary(host, (s) => s.loading);
   const error = usePkgLibrary(host, (s) => s.error);
   const installing = usePkgLibrary(host, (s) => s.installing);
+  const installingAll = usePkgLibrary(host, (s) => s.installingAll);
   const busyNotice = usePkgLibrary(host, (s) => s.busyNotice);
   const installPending = usePkgLibrary(host, (s) => s.installPending);
   const refresh = usePkgLibrary(host, (s) => s.refresh);
   const addAndUpload = usePkgLibrary(host, (s) => s.addAndUpload);
   const install = usePkgLibrary(host, (s) => s.install);
+  const installAll = usePkgLibrary(host, (s) => s.installAll);
   const cancelPendingInstall = usePkgLibrary(
     host,
     (s) => s.cancelPendingInstall,
@@ -530,6 +532,13 @@ export default function InstallPackageScreen() {
     () => entries.filter(isFinishedPkg).length,
     [entries],
   );
+  // Count of not-yet-installed, idle rows — drives the "Install all (N)"
+  // button. Mirrors installAll's own target filter in the store so the count
+  // and the action agree. >1 so the button only appears when it saves taps.
+  const installableCount = useMemo(
+    () => entries.filter((e) => e.status === "idle" && !e.installedHere).length,
+    [entries],
+  );
   const sorted = entries; // store already sorts by title
   // Installing swaps the payload out (it owns the transfer port :9113), so it
   // can't run concurrently with an upload. Rather than block the button, the
@@ -556,13 +565,46 @@ export default function InstallPackageScreen() {
                 single-PS5 users; color-matches the console's tab so it's
                 unambiguous with multiple consoles. */}
             <ConsoleChip addr={host} />
+            {/* Install every staged, not-yet-installed package in one tap,
+                base → update → DLC order. Only shown when it saves taps
+                (>1 installable row — a single row has its own Install button).
+                Disabled while any install runs; the store queues behind an
+                active upload rather than failing. */}
+            {installableCount > 1 && (
+              <Button
+                variant="secondary"
+                size="sm"
+                leftIcon={<Download size={14} />}
+                onClick={() => void installAll(host)}
+                loading={installingAll}
+                disabled={!hostReady || installing || installingAll}
+                title={
+                  !hostReady
+                    ? tr(
+                        "install.add.disabledHint",
+                        "Set a PS5 host on the Connection tab first",
+                      )
+                    : installing
+                      ? tr(
+                          "pkglib.add.installingHint",
+                          "Wait for the current install to finish",
+                        )
+                      : tr(
+                          "pkglib.installAll.hint",
+                          "Install every staged package, base games before updates and DLC",
+                        )
+                }
+              >
+                {tr("pkglib.installAll", undefined, "Install all")} ({installableCount})
+              </Button>
+            )}
             <Button
               variant="primary"
               size="sm"
               leftIcon={<Plus size={14} />}
               onClick={handlePick}
               loading={picking}
-              disabled={!hostReady || installing}
+              disabled={!hostReady || installing || installingAll}
               title={
                 !hostReady
                   ? tr(
diff --git a/client/src/state/pkgLibrary.test.ts b/client/src/state/pkgLibrary.test.ts
index e361b256..d4879e0f 100644
--- a/client/src/state/pkgLibrary.test.ts
+++ b/client/src/state/pkgLibrary.test.ts
@@ -41,6 +41,7 @@ import {
 import {
   titleIdFromContentId,
   platformFromTitleId,
+  pkgEntryInstallOrder,
   pkgLibraryStore,
   evictPkgLibraryStore,
   isFinishedPkg,
@@ -71,6 +72,45 @@ describe("platformFromTitleId", () => {
   });
 });
 
+describe("pkgEntryInstallOrder", () => {
+  it("orders by PARAM.SFO category: base(0) < update(1) < DLC(2)", () => {
+    expect(pkgEntryInstallOrder({ category: "gd", path: "/x.pkg" })).toBe(0);
+    expect(pkgEntryInstallOrder({ category: "gp", path: "/x.pkg" })).toBe(1);
+    expect(pkgEntryInstallOrder({ category: "ac", path: "/x.pkg" })).toBe(2);
+  });
+  it("falls back to a path hint when category is absent (headerless rows)", () => {
+    expect(
+      pkgEntryInstallOrder({ category: undefined, path: "/data/updates/p.pkg" }),
+    ).toBe(1);
+    expect(
+      pkgEntryInstallOrder({ category: undefined, path: "/data/dlc/p.pkg" }),
+    ).toBe(2);
+  });
+  it("defaults an unknown/base-shaped row to 0", () => {
+    expect(pkgEntryInstallOrder({ category: undefined, path: "/data/game.pkg" })).toBe(0);
+    expect(pkgEntryInstallOrder({ category: "xx", path: "/data/game.pkg" })).toBe(0);
+  });
+  it("prefers the category over a misleading path hint", () => {
+    // A base game that happens to live under an /updates/ dir must still be 0.
+    expect(
+      pkgEntryInstallOrder({ category: "gd", path: "/data/updates/base.pkg" }),
+    ).toBe(0);
+  });
+  it("sorts a mixed batch base → update → DLC (stable within a tier)", () => {
+    const rows = [
+      { category: "ac", path: "/dlc1.pkg" },
+      { category: "gp", path: "/upd.pkg" },
+      { category: "gd", path: "/base2.pkg" },
+      { category: "gd", path: "/base1.pkg" },
+    ];
+    const sorted = rows
+      .slice()
+      .sort((a, b) => pkgEntryInstallOrder(a) - pkgEntryInstallOrder(b))
+      .map((r) => r.path);
+    expect(sorted).toEqual(["/base2.pkg", "/base1.pkg", "/upd.pkg", "/dlc1.pkg"]);
+  });
+});
+
 describe("per-console store registry (eviction)", () => {
   it("returns the SAME store instance for a host until evicted", () => {
     const a1 = pkgLibraryStore("192.168.50.1");
diff --git a/client/src/state/pkgLibrary.ts b/client/src/state/pkgLibrary.ts
index da7f66e9..fa531108 100644
--- a/client/src/state/pkgLibrary.ts
+++ b/client/src/state/pkgLibrary.ts
@@ -210,6 +210,22 @@ export function platformFromTitleId(titleId: string | null | undefined): string
   return "";
 }
 
+/** Install ordering for a staged library row: base (0) → update (1) → DLC (2).
+ *  Mirrors `uploadQueue.installOrderPriority` but reads a `PkgEntry` (PARAM.SFO
+ *  category `gd`/`gp`/`ac`, falling back to a `/updates/` or `/dlc/` path hint
+ *  for headerless rows). `installAll` sorts by this so an add-on never installs
+ *  before its base — Sony's installer accepts an update/DLC whose base isn't
+ *  present yet but then lands nothing. Exported for unit testing. */
+export function pkgEntryInstallOrder(e: Pick<PkgEntry, "category" | "path">): number {
+  const cat = e.category;
+  if (cat === "gp") return 1;
+  if (cat === "ac") return 2;
+  if (cat === "gd") return 0;
+  if (/\/updates\/[^/]*$/.test(e.path)) return 1;
+  if (/\/dlc\/[^/]*$/.test(e.path)) return 2;
+  return 0;
+}
+
 /**
  * Whether a library row should get the "installed"/"Reinstall" treatment
  * (badge + secondary button) for a given set of installed title ids.
@@ -418,9 +434,20 @@ interface PkgLibraryState {
    *  mid-swap and leave a half-loaded payload. */
   installPending: boolean;
 
+  /** True while `installAll` is driving a sequential batch. Cosmetic — it
+   *  disables the Install-all button and shows batch progress; it does NOT
+   *  gate the inner per-pkg `install()`, which self-serializes on `installing`. */
+  installingAll: boolean;
+
   refresh: (host: string) => Promise<void>;
   addAndUpload: (localPath: string, host: string) => Promise<void>;
   install: (path: string, host: string) => Promise<void>;
+  /** Install every staged, not-yet-installed, idle row sequentially, in
+   *  base → update → DLC order (`pkgEntryInstallOrder`). Each item runs the
+   *  full readiness-gated `install()` cascade; one failure doesn't abort the
+   *  rest. Ends with a single summary bell. No-op if a single install is
+   *  already running. */
+  installAll: (host: string) => Promise<void>;
   /** Abandon an install that's still waiting its turn behind an upload. */
   cancelPendingInstall: () => void;
   remove: (path: string, host: string) => Promise<void>;
@@ -1002,6 +1029,7 @@ const makePkgLibraryStore = () =>
   installing: false,
   busyNotice: null,
   installPending: false,
+  installingAll: false,
 
   async refresh(host) {
     if (!host?.trim() || get().installing) return;
@@ -1536,6 +1564,73 @@ const makePkgLibraryStore = () =>
     }
   },
 
+  async installAll(host) {
+    if (!host?.trim()) return;
+    // Don't start a batch on top of a single in-flight install (or another
+    // batch) — the inner install() would early-return and we'd silently skip
+    // rows. The button is disabled in this state too; this is the guard.
+    if (get().installing || get().installingAll) return;
+
+    // Snapshot the not-yet-installed, idle rows and order them base → update →
+    // DLC so an add-on never installs before its base. `installedHere` is the
+    // authoritative per-package signal (see pkgRowInstalled); a row mid-upload
+    // or queued is skipped — installAll only drives ready staged packages.
+    const targets = get()
+      .entries.filter((e) => e.status === "idle" && !e.installedHere)
+      .slice()
+      .sort((a, b) => {
+        const d = pkgEntryInstallOrder(a) - pkgEntryInstallOrder(b);
+        // Stable within a tier: preserve listing order (base games in the
+        // order they were staged), matching uploadQueue's install ordering.
+        return d;
+      });
+
+    if (targets.length === 0) {
+      pushNotification("info", "Nothing to install", {
+        body: "Every staged package is already installed on this console.",
+      });
+      return;
+    }
+
+    set({ installingAll: true });
+    let ok = 0;
+    let failed = 0;
+    try {
+      for (const target of targets) {
+        // Re-read the row: an earlier item in the batch (or an outside action)
+        // may have changed its state. Skip if it's no longer an idle, not-yet-
+        // installed row.
+        const cur = get().entries.find((e) => e.path === target.path);
+        if (!cur || cur.status !== "idle" || cur.installedHere) continue;
+        // install() self-serializes on `installing` and awaits the full
+        // readiness-gated cascade; it sets the row's lastResult. It never
+        // throws (it catches internally), so a single failure can't abort the
+        // batch — we just count the outcome and move on.
+        await get().install(target.path, host);
+        const after = get().entries.find((e) => e.path === target.path);
+        if (after?.lastResult?.ok) ok++;
+        else failed++;
+      }
+    } finally {
+      set({ installingAll: false });
+    }
+
+    // One summary bell for the whole batch (each item's own success/failure
+    // bell still fires inside install(), matching the single-install UX).
+    pushNotification(
+      failed === 0 ? "success" : "warning",
+      failed === 0
+        ? `Installed ${ok} package${ok === 1 ? "" : "s"}`
+        : `Installed ${ok} of ${ok + failed}; ${failed} failed`,
+      {
+        body:
+          failed === 0
+            ? "All staged packages installed."
+            : "Some packages didn't install — check the rows marked failed and retry them.",
+      },
+    );
+  },
+
   async installExternal(pkg, host) {
     if (!host?.trim() || get().installing) {
       return { ok: false, message: "Another install is in progress." };
diff --git a/scripts/i18n-known-missing.json b/scripts/i18n-known-missing.json
index e2ff73d4..d4986183 100644
--- a/scripts/i18n-known-missing.json
+++ b/scripts/i18n-known-missing.json
@@ -75,6 +75,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -294,6 +296,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -513,6 +517,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -732,6 +738,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -951,6 +959,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -1170,6 +1180,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -1389,6 +1401,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -1608,6 +1622,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -1827,6 +1843,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -2046,6 +2064,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -2265,6 +2285,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -2484,6 +2506,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -2703,6 +2727,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -2922,6 +2948,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -3141,6 +3169,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -3360,6 +3390,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",
@@ -3579,6 +3611,8 @@
       "pkglib.external.scanning",
       "pkglib.external.scanningDrives",
       "pkglib.external.title",
+      "pkglib.installAll",
+      "pkglib.installAll.hint",
       "pkglib.installnote.body",
       "pkglib.installnote.title",
       "pkglib.options.heading",