diff --git a/Core/Core.vcxproj b/Core/Core.vcxproj
index d1811eae..54f4583e 100644
--- a/Core/Core.vcxproj
+++ b/Core/Core.vcxproj
@@ -533,6 +533,7 @@
     <ClInclude Include="IInputProvider.h" />
     <ClInclude Include="IInputRecorder.h" />
     <ClInclude Include="Kaiser7017.h" />
+    <ClInclude Include="Kaiser7031.h" />
     <ClInclude Include="KeyManager.h" />
     <ClInclude Include="MMC3_198.h" />
     <ClInclude Include="MovieRecorder.h" />
diff --git a/Core/Core.vcxproj.filters b/Core/Core.vcxproj.filters
index d3d06573..72748664 100644
--- a/Core/Core.vcxproj.filters
+++ b/Core/Core.vcxproj.filters
@@ -1402,6 +1402,9 @@
     <ClInclude Include="CityFighter.h">
       <Filter>Nes\Mappers\Unif</Filter>
     </ClInclude>
+    <ClInclude Include="Kaiser7031.h">
+      <Filter>Nes\Mappers\Unif</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="stdafx.cpp">
diff --git a/Core/Kaiser7031.h b/Core/Kaiser7031.h
new file mode 100644
index 00000000..07fa4bf0
--- /dev/null
+++ b/Core/Kaiser7031.h
@@ -0,0 +1,47 @@
+#pragma once
+#include "stdafx.h"
+#include "BaseMapper.h"
+
+class Kaiser7031 : public BaseMapper
+{
+private:
+	uint8_t _regs[4];
+
+protected:
+	uint16_t GetPRGPageSize() override { return 0x800; }
+	uint16_t GetCHRPageSize() override { return 0x2000; }
+
+	void InitMapper() override
+	{
+		SetMirroringType(MirroringType::Vertical);
+		memset(_regs, 0, sizeof(_regs));
+		for(int i = 0; i < 16; i++) {
+			SelectPRGPage(i, 15 - i);
+		}
+		SelectCHRPage(0, 0);
+		UpdateState();
+	}
+
+	void StreamState(bool saving) override
+	{
+		BaseMapper::StreamState(saving);
+		Stream(_regs[0], _regs[1], _regs[2], _regs[3]);
+
+		if(!saving) {
+			UpdateState();
+		}
+	}
+
+	void UpdateState()
+	{
+		for(int i = 0; i < 4; i++) {
+			SetCpuMemoryMapping(0x6000 + i * 0x800, 0x67FF + i * 0x800, _regs[i], PrgMemoryType::PrgRom);
+		}
+	}
+
+	void WriteRegister(uint16_t addr, uint8_t value) override
+	{
+		_regs[(addr >> 11) & 0x03] = value;
+		UpdateState();
+	}
+};
\ No newline at end of file
diff --git a/Core/MapperFactory.cpp b/Core/MapperFactory.cpp
index c4007b68..d58ac712 100644
--- a/Core/MapperFactory.cpp
+++ b/Core/MapperFactory.cpp
@@ -74,6 +74,7 @@
 #include "Kaiser7016.h"
 #include "Kaiser7017.h"
 #include "Kaiser7022.h"
+#include "Kaiser7031.h"
 #include "Kaiser7037.h"
 #include "Kaiser7057.h"
 #include "Kaiser7058.h"
@@ -556,6 +557,7 @@ BaseMapper* MapperFactory::GetMapperFromID(RomData &romData)
 		case UnifBoards::Ks7013B: return new Kaiser7013B();
 		case UnifBoards::Ks7016: return new Kaiser7016();
 		case UnifBoards::Ks7017: return new Kaiser7017();
+		case UnifBoards::Ks7031: return new Kaiser7031();
 		case UnifBoards::Ks7037: return new Kaiser7037();
 		case UnifBoards::Ks7057: return new Kaiser7057();
 		case UnifBoards::Lh10: return new Lh10();
diff --git a/Core/UnifBoards.h b/Core/UnifBoards.h
index d8dd10f9..e126c4c5 100644
--- a/Core/UnifBoards.h
+++ b/Core/UnifBoards.h
@@ -43,12 +43,13 @@ namespace UnifBoards {
 		Bmc8in1,
 		BmcF15,
 		Lh10,
+		Ks7012,
+		Ks7013B,
+		Ks7016,
+		Ks7017,
+		Ks7031,
 		Ks7037,
 		Ks7057,
-		Ks7017,
-		Ks7016,
-		Ks7013B,
-		Ks7012,
 		MaliSB,
 		Unl43272,
 		Bmc411120C,
diff --git a/Core/UnifLoader.cpp b/Core/UnifLoader.cpp
index 19a42dc6..b47e9aaa 100644
--- a/Core/UnifLoader.cpp
+++ b/Core/UnifLoader.cpp
@@ -60,7 +60,7 @@ std::unordered_map<string, int> UnifLoader::_boardMappings = std::unordered_map<
 	{ "KS7016", UnifBoards::Ks7016 },
 	{ "KS7017", UnifBoards::Ks7017 },
 	{ "KS7030", UnifBoards::UnknownBoard },
-	{ "KS7031", UnifBoards::UnknownBoard },
+	{ "KS7031", UnifBoards::Ks7031 },
 	{ "KS7032", 142 },
 	{ "KS7037", UnifBoards::Ks7037 },
 	{ "KS7057", UnifBoards::Ks7057 },