diff --git a/src/common/config.cpp b/src/common/config.cpp
index be0c38cfb..7d88c29bb 100644
--- a/src/common/config.cpp
+++ b/src/common/config.cpp
@@ -115,6 +115,7 @@ public:
 static ConfigEntry<int> volumeSlider(100);
 static ConfigEntry<bool> isNeo(false);
 static ConfigEntry<bool> isDevKit(false);
+static ConfigEntry<int> extraDmemInMbytes(0);
 static ConfigEntry<bool> isPSNSignedIn(false);
 static ConfigEntry<bool> isTrophyPopupDisabled(false);
 static ConfigEntry<double> trophyNotificationDuration(6.0);
@@ -286,6 +287,14 @@ bool isDevKitConsole() {
     return isDevKit.get();
 }
 
+int getExtraDmemInMbytes() {
+    return extraDmemInMbytes.get();
+}
+
+void setExtraDmemInMbytes(int value) {
+    extraDmemInMbytes.base_value = 0;
+}
+
 bool getIsFullscreen() {
     return isFullscreen.get();
 }
@@ -830,6 +839,9 @@ void load(const std::filesystem::path& path, bool is_game_specific) {
         volumeSlider.setFromToml(general, "volumeSlider", is_game_specific);
         isNeo.setFromToml(general, "isPS4Pro", is_game_specific);
         isDevKit.setFromToml(general, "isDevKit", is_game_specific);
+        if (is_game_specific) { // do not get this value from the base config
+            extraDmemInMbytes.setFromToml(general, "extraDmemInMbytes", is_game_specific);
+        }
         isPSNSignedIn.setFromToml(general, "isPSNSignedIn", is_game_specific);
         isTrophyPopupDisabled.setFromToml(general, "isTrophyPopupDisabled", is_game_specific);
         trophyNotificationDuration.setFromToml(general, "trophyNotificationDuration",
@@ -1032,6 +1044,9 @@ void save(const std::filesystem::path& path, bool is_game_specific) {
     isSideTrophy.setTomlValue(data, "General", "sideTrophy", is_game_specific);
     isNeo.setTomlValue(data, "General", "isPS4Pro", is_game_specific);
     isDevKit.setTomlValue(data, "General", "isDevKit", is_game_specific);
+    if (is_game_specific) {
+        extraDmemInMbytes.setTomlValue(data, "General", "extraDmemInMbytes", is_game_specific);
+    }
     isPSNSignedIn.setTomlValue(data, "General", "isPSNSignedIn", is_game_specific);
     isConnectedToNetwork.setTomlValue(data, "General", "isConnectedToNetwork", is_game_specific);
 
@@ -1155,6 +1170,7 @@ void setDefaultValues(bool is_game_specific) {
         isPSNSignedIn.set(false, is_game_specific);
         isConnectedToNetwork.set(false, is_game_specific);
         directMemoryAccessEnabled.set(false, is_game_specific);
+        extraDmemInMbytes.set(0, is_game_specific);
     }
 
     // Entries with game-specific settings that are in both the game-specific and global GUI
diff --git a/src/common/config.h b/src/common/config.h
index 6e7fdecd0..0d41d2c99 100644
--- a/src/common/config.h
+++ b/src/common/config.h
@@ -116,6 +116,8 @@ bool isDevKitConsole();
 void setDevKitConsole(bool enable, bool is_game_specific = false);
 
 bool vkValidationGpuEnabled(); // no set
+int getExtraDmemInMbytes();
+void setExtraDmemInMbytes(int value);
 bool getIsMotionControlsEnabled();
 void setIsMotionControlsEnabled(bool use, bool is_game_specific = false);
 std::string getDefaultControllerID();
diff --git a/src/core/address_space.cpp b/src/core/address_space.cpp
index 9e37b4fa4..5ded48df4 100644
--- a/src/core/address_space.cpp
+++ b/src/core/address_space.cpp
@@ -6,6 +6,7 @@
 #include "common/alignment.h"
 #include "common/arch.h"
 #include "common/assert.h"
+#include "common/config.h"
 #include "common/error.h"
 #include "core/address_space.h"
 #include "core/libraries/kernel/memory.h"
@@ -27,7 +28,7 @@ asm(".zerofill SYSTEM_RESERVED,SYSTEM_RESERVED,__SYSTEM_RESERVED,0x7C0004000");
 
 namespace Core {
 
-static constexpr size_t BackingSize = ORBIS_KERNEL_TOTAL_MEM_DEV_PRO;
+static size_t BackingSize = ORBIS_KERNEL_TOTAL_MEM_DEV_PRO;
 
 #ifdef _WIN32
 
@@ -71,6 +72,7 @@ struct MemoryRegion {
 
 struct AddressSpace::Impl {
     Impl() : process{GetCurrentProcess()} {
+        BackingSize += Config::getExtraDmemInMbytes() * 1_MB;
         // Allocate virtual address placeholder for our address space.
         MEM_ADDRESS_REQUIREMENTS req{};
         MEM_EXTENDED_PARAMETER param{};
@@ -432,6 +434,7 @@ enum PosixPageProtection {
 
 struct AddressSpace::Impl {
     Impl() {
+        BackingSize += Config::getExtraDmemInMbytes() * 1_MB;
         // Allocate virtual address placeholder for our address space.
         system_managed_size = SystemManagedSize;
         system_reserved_size = SystemReservedSize;
diff --git a/src/core/memory.cpp b/src/core/memory.cpp
index ea06c9640..cfe5ffb26 100644
--- a/src/core/memory.cpp
+++ b/src/core/memory.cpp
@@ -42,6 +42,13 @@ void MemoryManager::SetupMemoryRegions(u64 flexible_size, bool use_extended_mem1
     if (Config::isDevKitConsole()) {
         total_size = is_neo ? ORBIS_KERNEL_TOTAL_MEM_DEV_PRO : ORBIS_KERNEL_TOTAL_MEM_DEV;
     }
+    s32 extra_dmem = Config::getExtraDmemInMbytes();
+    if (Config::getExtraDmemInMbytes() != 0) {
+        LOG_WARNING(Kernel_Vmm,
+                    "extraDmemInMbytes is {} MB! Old Direct Size: {:#x} -> New Direct Size: {:#x}",
+                    extra_dmem, total_size, total_size + extra_dmem * 1_MB);
+        total_size += extra_dmem * 1_MB;
+    }
     if (!use_extended_mem1 && is_neo) {
         total_size -= 256_MB;
     }
@@ -58,7 +65,7 @@ void MemoryManager::SetupMemoryRegions(u64 flexible_size, bool use_extended_mem1
 
     // Insert an area that covers the flexible memory physical address block.
     // Note that this should never be called after flexible memory allocations have been made.
-    const auto remaining_physical_space = ORBIS_KERNEL_TOTAL_MEM_DEV_PRO - total_direct_size;
+    const auto remaining_physical_space = total_size - total_direct_size;
     fmem_map.clear();
     fmem_map.emplace(total_direct_size,
                      FlexibleMemoryArea{total_direct_size, remaining_physical_space});