diff --git a/hash/gameking.xml b/hash/gameking.xml
index c06adc06e80..1a142f87cf0 100644
--- a/hash/gameking.xml
+++ b/hash/gameking.xml
@@ -1,7 +1,8 @@
 <?xml version="1.0"?>
 <!DOCTYPE softwarelist SYSTEM "softwarelist.dtd">
 
-<!-- dumps are not yet verified as good, the 3-in-1 internal ROM is not yet dumped -->
+<!-- dumps are not yet verified as good, although most have been confirmed to run on a flash cart
+     the 3-in-1 internal ROM of the system is not yet dumped -->
 
 <softwarelist name="gameking" description="TimeTop GameKing cartridges">
 
@@ -16,7 +17,18 @@
 		</part>
 	</software>
 
-	<software name="2004" supported="no">
+  <software name="4in1a" supported="no">
+    <description>4 in 1 Vol. 8</description>
+    <year>200?</year>
+    <publisher>TimeTop</publisher>
+    <part name="cart" interface="gameking_cart">
+      <dataarea name="rom" size="524288">
+        <rom name="4in1_vol8.bin" size="524288" crc="6741847e" sha1="b561ca1b52e3492f86e7558722c8c8956e845bc5" offset="0x00000" />
+      </dataarea>
+    </part>
+  </software>
+
+  <software name="2004" supported="no">
 		<description>2004</description>
 		<year>200?</year>
 		<publisher>TimeTop</publisher>
@@ -225,4 +237,6 @@
 		</part>
 	</software>
 
+
+  
 </softwarelist>
diff --git a/hash/gameking3.xml b/hash/gameking3.xml
new file mode 100644
index 00000000000..3b674de0a9c
--- /dev/null
+++ b/hash/gameking3.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0"?>
+<!DOCTYPE softwarelist SYSTEM "softwarelist.dtd">
+
+<!-- dumps are not yet verified as good, not yet tested on GK3 hardware, don't run on an original GameKing unit -->
+
+<softwarelist name="gameking3" description="TimeTop GameKing 3 cartridges">
+
+  <software name="urgent" supported="no">
+    <description>Urgent Action</description>
+    <year>200?</year>
+    <publisher>TimeTop</publisher>
+    <part name="cart" interface="gameking_cart">
+      <dataarea name="rom" size="524288">
+        <rom name="urgenaction.gk3" size="524288" crc="dcf935f8" sha1="9c1375c622caab9e328ee66434087a18a16ea036" offset="0x00000" />
+      </dataarea>
+    </part>
+  </software>
+
+  <software name="adventr" supported="no">
+    <description>Adventure</description>
+    <year>200?</year>
+    <publisher>TimeTop</publisher>
+    <part name="cart" interface="gameking_cart">
+      <dataarea name="rom" size="524288">
+        <rom name="adventure.gk3" size="524288" crc="70082274" sha1="83b164719b2c2d5c133ca05c9fac0102b0d88e4c" offset="0x00000" />
+      </dataarea>
+    </part>
+  </software>
+  
+</softwarelist>
diff --git a/src/mess/drivers/gameking.c b/src/mess/drivers/gameking.c
index da070c6a4aa..d6d277a936b 100644
--- a/src/mess/drivers/gameking.c
+++ b/src/mess/drivers/gameking.c
@@ -106,7 +106,7 @@ DEVICE_IMAGE_LOAD_MEMBER( gameking_state, gameking_cart )
 {
 	UINT32 size = m_cart->common_get_size("rom");
 
-	if (size > 0x20000)
+	if (size > 0x80000)
 	{
 		image.seterror(IMAGE_ERROR_UNSPECIFIED, "Unsupported cartridge size");
 		return IMAGE_INIT_FAIL;
@@ -182,6 +182,7 @@ static MACHINE_CONFIG_START( gameking, gameking_state )
 
 	/* Software lists */
 	MCFG_SOFTWARE_LIST_ADD("cart_list", "gameking")
+	MCFG_SOFTWARE_LIST_ADD("cart_list_3", "gameking3") // maybe not compatible with this system (different internal bios?)
 MACHINE_CONFIG_END
 
 ROM_START(gameking)