diff --git a/hash/gameboy.xml b/hash/gameboy.xml
index 2a638c5f662..37fea31daf1 100644
--- a/hash/gameboy.xml
+++ b/hash/gameboy.xml
@@ -6890,9 +6890,27 @@
 		<description>Goukaku Boy GOLD - Shikakui Atama o Maruku Suru - Joushiki no Sho (Jpn)</description>
 		<year>2000</year>
 		<publisher>Imagineer</publisher>
-		<info name="serial" value="DMG-BS4J-JPN"/>
+		<info name="serial" value="DMG-BJ3J-JPN"/>
 		<info name="release" value="20000317"/>
 		<info name="alt_title" value="ゴールド シカクいアタマをマルくする。 合格ボーイGOLD ■いアタマを●くする。 国語 算数 理科 社会 常識の書"/>
+		<part name="cart" interface="gameboy_cart">
+			<feature name="slot" value="rom_mbc5" />
+			<!-- cartridge ram -->
+			<dataarea name="rom" size="1048576">
+				<rom name="sikakujosikbj3j1.bin" size="1048576" crc="26772e04" sha1="a6ab7420a2d69d62338bc03dc4e0e46b0dc8429b" offset="000000" />
+			</dataarea>
+			<dataarea name="nvram" size="8192">
+			</dataarea>
+		</part>
+	</software>
+
+	<software name="gbsjousse" cloneof="gbsjous">
+		<description>Goukaku Boy GOLD - Shikakui Atama o Maruku Suru - Joushiki no Sho (Jpn, Special Edition)</description>
+		<year>2000</year>
+		<publisher>Imagineer</publisher>
+		<info name="serial" value="DMG-BS4J-JPN"/>
+		<info name="release" value="20000317"/>
+		<info name="alt_title" value="ゴールド シカクいアタマをマルくする。 合格ボーイGOLD ■いアタマを●くする。 国語 算数 理科 社会 常識の書 スペシャルエディション"/>
 		<part name="cart" interface="gameboy_cart">
 			<feature name="slot" value="rom_mbc5" />
 			<!-- cartridge ram -->
@@ -6905,7 +6923,7 @@
 	</software>
 
 	<software name="gbskjtat">
-		<description>Goukaku Boy GOLD - Shikakui Atama o Maruku Suru - Kanji no Tatsujin (Jpn)</description>
+		<description>Goukaku Boy GOLD - Shikakui Atama o Maruku Suru - Kanji no Tatsujin (Jpn, Special Edition)</description>
 		<year>2001</year>
 		<publisher>Imagineer</publisher>
 		<info name="serial" value="DMG-BK4J-JPN"/>
diff --git a/hash/gamegear.xml b/hash/gamegear.xml
index c30c391d21d..25e9d22f47b 100644
--- a/hash/gamegear.xml
+++ b/hash/gamegear.xml
@@ -7281,6 +7281,7 @@ A few games have been listed as rumored, but they might very well be fake (pleas
 	</software>
 
 	<software name="soniclab">
+    <!-- A final pre-release version of this same dump was found on a proto board with 4x128K sockets and no labels -->
 		<description>Sonic Labyrinth (World)</description>
 		<year>1995</year>
 		<publisher>Sega</publisher>
@@ -7588,6 +7589,28 @@ A few games have been listed as rumored, but they might very well be fake (pleas
 		</part>
 	</software>
 
+	<software name="sonic2d" cloneof="sonic2">
+    <!-- This predates the final release and contains some different tiles & sprites compared to the final game -->
+		<description>Sonic The Hedgehog 2 (Rolling Demo)</description>
+		<year>1992</year>
+		<publisher>Sega</publisher>
+		<part name="cart" interface="gamegear_cart">
+			<feature name="pcb" value="171-5986B" />
+			<feature name="ic1" value="[unmarked]" />
+			<feature name="ic2" value="[unmarked]" />
+			<feature name="ic3" value="MB8464A-10LL-SK" />
+			<feature name="ic4" value="315-5235" />
+			<feature name="ic5" value="HD74LS157P" />
+			<feature name="ic6" value="IL7-1026B" />
+			<feature name="batt" value="" />
+			<feature name="sw" value="ON = 1M / OFF = 256" />
+			<dataarea name="rom" size="262144">
+            <!-- The ROM should be split in two halves -->
+				<rom name="sonic_2_auto_demo_prototype_(1991-12-05)_tmr_sega_cb06_ffff.bin" size="262144" crc="15ad37a5" sha1="b780c6f059b48d1bb48ee2ad521552dab1487c88" offset="000000" />
+			</dataarea>
+		</part>
+	</software>
+
 	<software name="sonictri">
 		<description>Sonic The Hedgehog - Triple Trouble (Euro, USA)</description>
 		<year>1994</year>
@@ -8607,6 +8630,7 @@ A few games have been listed as rumored, but they might very well be fake (pleas
 	</software>
 
 	<software name="tailsadv">
+    <!-- A final pre-release version of this same dump was found on a proto board with 4x128K sockets and no labels -->
 		<description>Tails Adventures (World)</description>
 		<year>1995</year>
 		<publisher>Sega</publisher>
diff --git a/hash/gba.xml b/hash/gba.xml
index 229a5015ca4..ee309b45a3b 100644
--- a/hash/gba.xml
+++ b/hash/gba.xml
@@ -16531,6 +16531,18 @@ Note: In the AGB-E05-XX and AGB-E06-XX pcbs, the chip name is hidden under the b
 	</software>
 
 	<software name="garfldspa" cloneof="garfldsp">
+		<description>Garfield - The Search for Pooky (Euro, Rev. 1)</description>
+		<year>2004</year>
+		<publisher>The Game Factory</publisher>
+		<info name="serial" value="AGB-BGOP-EUR"/>
+		<part name="cart" interface="gba_cart">
+			<dataarea name="rom" size="8388608">
+				<rom name="garfieldtsfp.rev1.bin" size="8388608" crc="387eb638" sha1="5ead81908f576e37837bab60d5c580ca684a8fc5" offset="000000" />
+			</dataarea>
+		</part>
+	</software>
+
+	<software name="garfldspb" cloneof="garfldsp">
 		<description>Garfield - The Search for Pooky (Euro)</description>
 		<year>2004</year>
 		<publisher>The Game Factory</publisher>