diff --git a/android/app/src/main/cpp/xemu_android.cpp b/android/app/src/main/cpp/xemu_android.cpp
index e74461dfec..125caa0873 100644
--- a/android/app/src/main/cpp/xemu_android.cpp
+++ b/android/app/src/main/cpp/xemu_android.cpp
@@ -576,6 +576,7 @@ cleanup:
 struct EmulatorSettings {
   int surface_scale    = 1;         // 1, 2, or 3
   int frame_rate_limit = 60;        // 30 or 60
+  int system_memory_mib = 64;       // 64 or 128
   std::string tcg_thread = "multi"; // "single" or "multi"
   bool use_dsp         = false;
   bool hrtf            = true;
@@ -686,6 +687,8 @@ static bool WriteConfigToml(const std::string& config_path,
   if (!android->contains("audio_driver")) {
     android->insert_or_assign("audio_driver", "openslES");
   }
+  sys->insert_or_assign(
+      "mem_limit", settings.system_memory_mib == 128 ? "128" : "64");
 
   files->insert_or_assign("bootrom_path", mcpx);
   files->insert_or_assign("flashrom_path", flash);
@@ -806,6 +809,12 @@ static SetupFiles SyncSetupFiles() {
       emuSettings.frame_rate_limit != 60) {
     emuSettings.frame_rate_limit = 60;
   }
+  emuSettings.system_memory_mib =
+      GetPrefInt(env, activity, "setting_system_memory_mib", 64);
+  if (emuSettings.system_memory_mib != 64 &&
+      emuSettings.system_memory_mib != 128) {
+    emuSettings.system_memory_mib = 64;
+  }
   emuSettings.use_dsp        = GetPrefBool(env, activity, "setting_use_dsp", false);
   emuSettings.hrtf           = GetPrefBool(env, activity, "setting_hrtf", true);
   emuSettings.cache_shaders  = GetPrefBool(env, activity, "setting_cache_shaders", true);
diff --git a/android/app/src/main/cpp/xemu_settings_android.cc b/android/app/src/main/cpp/xemu_settings_android.cc
index b00f5eb4eb..dce416a568 100644
--- a/android/app/src/main/cpp/xemu_settings_android.cc
+++ b/android/app/src/main/cpp/xemu_settings_android.cc
@@ -404,6 +404,20 @@ bool xemu_settings_load(void)
             }
         }
 
+        if (auto mem_limit = sys["mem_limit"].value<std::string>()) {
+            if (*mem_limit == "128") {
+                g_config.sys.mem_limit = CONFIG_SYS_MEM_LIMIT_128;
+            } else {
+                g_config.sys.mem_limit = CONFIG_SYS_MEM_LIMIT_64;
+            }
+        } else if (auto mem_limit = sys["mem_limit"].value<int64_t>()) {
+            if ((int)*mem_limit == 128) {
+                g_config.sys.mem_limit = CONFIG_SYS_MEM_LIMIT_128;
+            } else {
+                g_config.sys.mem_limit = CONFIG_SYS_MEM_LIMIT_64;
+            }
+        }
+
         // System file paths
         if (auto bootrom = sys_files["bootrom_path"].value<std::string>()) {
             xemu_settings_set_string(&g_config.sys.files.bootrom_path, bootrom->c_str());
diff --git a/android/app/src/main/java/com/izzy2lost/x1box/SettingsActivity.kt b/android/app/src/main/java/com/izzy2lost/x1box/SettingsActivity.kt
index 1d67dccef4..a8e98793ad 100644
--- a/android/app/src/main/java/com/izzy2lost/x1box/SettingsActivity.kt
+++ b/android/app/src/main/java/com/izzy2lost/x1box/SettingsActivity.kt
@@ -41,6 +41,7 @@ class SettingsActivity : AppCompatActivity() {
     val btn3x             = findViewById<MaterialButton>(R.id.btn_scale_3x)
     val toggleDisplayMode = findViewById<MaterialButtonToggleGroup>(R.id.toggle_display_mode)
     val toggleFrameRate   = findViewById<MaterialButtonToggleGroup>(R.id.toggle_frame_rate)
+    val toggleSystemMemory = findViewById<MaterialButtonToggleGroup>(R.id.toggle_system_memory)
     val toggleThread      = findViewById<MaterialButtonToggleGroup>(R.id.toggle_tcg_thread)
     val btnMulti          = findViewById<MaterialButton>(R.id.btn_thread_multi)
     val btnSingle         = findViewById<MaterialButton>(R.id.btn_thread_single)
@@ -76,6 +77,12 @@ class SettingsActivity : AppCompatActivity() {
       else -> toggleFrameRate.check(R.id.btn_fps_60)
     }
 
+    val systemMemoryMiB = prefs.getInt("setting_system_memory_mib", 64)
+    when (systemMemoryMiB) {
+      128  -> toggleSystemMemory.check(R.id.btn_memory_128)
+      else -> toggleSystemMemory.check(R.id.btn_memory_64)
+    }
+
     tvVulkanDriverName.text =
       prefs.getString("setting_vulkan_driver_name", null)
         ?: getString(R.string.settings_vulkan_driver_none)
@@ -132,6 +139,10 @@ class SettingsActivity : AppCompatActivity() {
         R.id.btn_thread_single -> "single"
         else                   -> "multi"
       }
+      val selectedSystemMemoryMiB = when (toggleSystemMemory.checkedButtonId) {
+        R.id.btn_memory_128 -> 128
+        else                -> 64
+      }
       val selectedAudioDriver = when (toggleAudioDriver.checkedButtonId) {
         R.id.btn_audio_aaudio    -> "aaudio"
         R.id.btn_audio_disabled  -> "dummy"
@@ -142,6 +153,7 @@ class SettingsActivity : AppCompatActivity() {
         .putInt("setting_display_mode", selectedDisplayMode)
         .putInt("setting_surface_scale", selectedScale)
         .putInt("setting_frame_rate_limit", selectedFrameRate)
+        .putInt("setting_system_memory_mib", selectedSystemMemoryMiB)
         .putString("setting_tcg_thread", selectedThread)
         .putBoolean("setting_use_dsp", switchDsp.isChecked)
         .putBoolean("setting_hrtf", switchHrtf.isChecked)
diff --git a/android/app/src/main/res/layout/activity_settings.xml b/android/app/src/main/res/layout/activity_settings.xml
index b191c17d1a..7f422b887a 100644
--- a/android/app/src/main/res/layout/activity_settings.xml
+++ b/android/app/src/main/res/layout/activity_settings.xml
@@ -174,6 +174,48 @@
 
           </com.google.android.material.button.MaterialButtonToggleGroup>
 
+          <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="6dp"
+            android:text="@string/settings_system_memory"
+            android:textAppearance="@style/TextAppearance.Material3.BodyMedium"
+            android:textColor="@color/xemu_text_muted" />
+
+          <com.google.android.material.button.MaterialButtonToggleGroup
+            android:id="@+id/toggle_system_memory"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="16dp"
+            app:selectionRequired="true"
+            app:singleSelection="true">
+
+            <com.google.android.material.button.MaterialButton
+              android:id="@+id/btn_memory_64"
+              style="?attr/materialButtonOutlinedStyle"
+              android:layout_width="0dp"
+              android:layout_height="wrap_content"
+              android:layout_weight="1"
+              android:text="@string/settings_system_memory_64" />
+
+            <com.google.android.material.button.MaterialButton
+              android:id="@+id/btn_memory_128"
+              style="?attr/materialButtonOutlinedStyle"
+              android:layout_width="0dp"
+              android:layout_height="wrap_content"
+              android:layout_weight="1"
+              android:text="@string/settings_system_memory_128" />
+
+          </com.google.android.material.button.MaterialButtonToggleGroup>
+
+          <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="12dp"
+            android:text="@string/settings_system_memory_hint"
+            android:textAppearance="@style/TextAppearance.Material3.BodySmall"
+            android:textColor="@color/xemu_text_muted" />
+
           <!-- ── VULKAN DRIVER ── -->
           <TextView
             android:layout_width="match_parent"
diff --git a/android/app/src/main/res/values/strings.xml b/android/app/src/main/res/values/strings.xml
index 5522a07174..290bdef04c 100644
--- a/android/app/src/main/res/values/strings.xml
+++ b/android/app/src/main/res/values/strings.xml
@@ -92,6 +92,10 @@
   <string name="settings_frame_rate_limit">Frame Rate Limit</string>
   <string name="settings_frame_rate_limit_30">30 FPS</string>
   <string name="settings_frame_rate_limit_60">60 FPS</string>
+  <string name="settings_system_memory">System Memory</string>
+  <string name="settings_system_memory_64">64 MiB (Default)</string>
+  <string name="settings_system_memory_128">128 MiB (Debug/Homebrew)</string>
+  <string name="settings_system_memory_hint">Use 64 MiB for retail games. 128 MiB is mainly for debug/homebrew and may reduce compatibility.</string>
   <string name="settings_resolution_scale">Internal Resolution Scale</string>
   <string name="settings_resolution_scale_1x">1x (Native 480p)</string>
   <string name="settings_resolution_scale_2x">2x (960p)</string>