diff --git a/hash/megadriv.xml b/hash/megadriv.xml
index ec382ff3b46..72ce390c650 100644
--- a/hash/megadriv.xml
+++ b/hash/megadriv.xml
@@ -11302,6 +11302,17 @@ but dumps still have to be confirmed.
 		</part>
 	</software>
 
+	<software name="btlmanidp" cloneof="btlmanid">
+		<description>Battle Mania Daiginjou (Jpn, Prototype, 19910528)</description>
+		<year>1991</year>
+		<publisher>Big Evil Corp.</publisher>
+		<part name="cart" interface="megadriv_cart">
+			<dataarea name="rom" width="16" endianness="big" size="524288">
+				<rom name="Battle Mania (May 28, 1991 prototype).bin" size="524288" crc="bf0a017f" sha1="5d707ba8dbbfa8ad7a6ec20735e41b2b84941efe" offset="0x000000"/>
+			</dataarea>
+		</part>
+	</software>
+
 	<software name="battlesqp" cloneof="battlesq">
 		<description>Battle Squadron (USA, Prototype 19910118)</description>
 		<year>1990</year>