diff --git a/BizHawk.Emulation/BizHawk.Emulation.csproj b/BizHawk.Emulation/BizHawk.Emulation.csproj
index 6102098bfb..937dd23bb8 100644
--- a/BizHawk.Emulation/BizHawk.Emulation.csproj
+++ b/BizHawk.Emulation/BizHawk.Emulation.csproj
@@ -73,6 +73,7 @@
       <SubType>Code</SubType>
     </Compile>
     <Compile Include="Consoles\Nintendo\NES\Boards\Jaleco-JF_11_14.cs" />
+    <Compile Include="Consoles\Nintendo\NES\Boards\Mapper242.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\NROM.cs">
       <SubType>Code</SubType>
     </Compile>
diff --git a/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Mapper242.cs b/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Mapper242.cs
new file mode 100644
index 0000000000..46544ffca7
--- /dev/null
+++ b/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Mapper242.cs
@@ -0,0 +1,58 @@
+using System;
+using System.IO;
+using System.Diagnostics;
+
+namespace BizHawk.Emulation.Consoles.Nintendo
+{
+    /*
+PCB Class: Unknown
+iNES Mapper #242
+PRG-ROM: 32KB
+PRG-RAM: None
+CHR-ROM: 16KB
+CHR-RAM: None
+Battery is not available
+mirroring - both
+     * 
+     * Games:
+     * Wai Xing Zhan Shi (Ch)
+     */
+
+    class Mapper242 : NES.NESBoardBase
+    {
+
+        public override bool Configure(NES.EDetectionOrigin origin)
+        {
+            //configure
+			switch (Cart.board_type)
+			{
+				case "Mapper242":
+					break;
+				default:
+					return false;
+			}
+            return true;
+        }
+
+        public override byte ReadPPU(int addr)
+        {
+            return base.ReadPPU(addr);
+        }
+
+        public override byte ReadPRG(int addr)
+        {
+            return base.ReadPRG(addr);
+        }
+
+        public override void WriteWRAM(int addr, byte value)
+        {
+
+            base.WriteWRAM(addr, value);
+        }
+
+		public override void SyncState(Serializer ser)
+        {
+			base.SyncState(ser);
+        }
+    }
+}
diff --git a/BizHawk.MultiClient/output/gamedb.txt b/BizHawk.MultiClient/output/gamedb.txt
index 46ae4cc303..2743383122 100644
--- a/BizHawk.MultiClient/output/gamedb.txt
+++ b/BizHawk.MultiClient/output/gamedb.txt
@@ -2267,6 +2267,7 @@ sha1:CF655333DCE649A3C7060E9989860F2FC74E473A		Demon Sword (U)	NES		board=NES-SL
 sha1:7786BA1FE8E7E9E542EEB13CF2A6E2A1AD7F696D		Metal Gear (U)	NES		board=KONAMI-UNROM;PRG=128
 sha1:894F20405286F5F75133CE4648300E2C67972B40		Solomon's Key (U)	NES		board=NES-CNROM;PRG=32;CHR=32
 sha1:0C53B06E1D13AE917536BB39010914EA3D111FF5		Thunder & Lightning (U)	NES		board=NES-GNROM;PRG=128;CHR=32;bad
+sha1:9BDFF9A19265D84979F43F0F6E925A735DDEB38B		Wai Xing Zhan Shi (Ch)	NES		board=Mapper242;PRG=32;CHR=0
 
 ;these roms are from goodNES but they are confusingly messed up somehow
 sha1:192C543866F1037276D2778046ABEDCA84868E26		Bio Senshi Dan - Increaser To No Tatakai (J)	NES		board=JALECO-JF-14;PRG=128;CHR=128