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wbmlb: MAME ROM Information.


Wonder Boy in Monster Land (c) 1987 Sega.

Use your sword to fight monsters and defeat the Dragon. Collect gold to upgrade your boots, shield and armor, and defeat bosses to strengthen your sword. Most stages include a boss, that once defeated leaves behind a key to the next stage.


Sega System 2 hardware

Main CPU : Z80 (@ 4 Mhz)

Sound CPU : Z80 (@ 4 Mhz)

Sound Chips : SN76496 (@ 4 Mhz), SN76496 (@ 2 Mhz)

Players : 2

Control : 8-way joystick

Buttons : 2 (STAB, JUMP)


Released in August 1987 in Japan.

Developed by Westone.

A bootleg of this game was made by Galaxy Electronics in England.


* This game has hidden coins that appear when you jump in certain spots. The demo screen shows a couple of these. Some of them will give you 60 gold or more every time.

* How to get 60+ golds from hidden coins : Besides the general strategy of quickly wiggling the joystick right and left while jumping (which raises the chance to get 60+ golds), certain coins, in certain places within the game, will ALWAYS yield 60+ golds if you perform particular actions :

1) Round 2 : On the screen after you kill the Vampire, there's a platform with a Shoe Shop and some stairs which lead downwards to an Infirmary. Wait for the little mushroom to go down the stairs, and stand so that you are almost off the topmost stair. The mushroom will come back up and hit you, making you fall off the stairs. Hold the joystick to the left so that when you land you walk into the bottom step. This will drop a 60+ coin. NOTE: This trick only works if you haven't bought any shoes yet.

2) Round 3 : On the stage after you kill the Red Knight, you'll see some jellyfishes on platforms over the water. At the first jellyfish you come to, wait for it to drop into the water, then lean out of the platform putting yourself on its trajectory. The jellyfish will hit you, and you'll get a 60+ golds bag. NOTE: This trick is shown during the attract mode.

3) Round 3 (Baraboro) : Climb the ladder to the platform where the Shield Shop and Catherine's window are located. Once you're atop the ladder, let the mouse hit you. You'll fall leftwards, triggering a 60+ golds bag.

4) Round 6 (Pyramid) : Beneath the platform where the Infirmary is located, there are some spikes. Approach the spikes as much as possible, then hit jump and fire at the same time, and keep hitting them every time you land. Some coins will start to fall from the platform and head towards you. If you'll keep a pace as much regular as possible, many of those coins will yield 60+ golds.


1. Wonder Boy (1986)

2. Wonder Boy in Monster Land (1987)

3. Wonder Boy III - Monster Lair (1988)

4. Wonder Boy IV - Monster World II (Sega Mega Drive)

5. Wonder Boy V - Monster World III (1991, Sega Mega Drive)

6. Monster World IV (1994, Sega Mega Drive)


Program : Ryuichi Nishizawa, Michishito Ishizuka

Character Produce : Naoki Hoshizaki

Music Compose : Shin-ichi Sakamoto

Character Design : Hiromi Suzuko, Rie Ishizuka (aka Rie Yatomi)

Special Thanks : Kohta Kikuchi, K. Kiyokawaanzu, Ohayashi

Produce : Ryuichi Nishizawa


* Consoles :

Sega Master System (1988)

NEC PC-Engine (1988)

Sony PlayStation 2 (2007, "Sega Ages 2500 Vol. 29 - Monster World Complete Collection")

* Computers :

Sinclair ZX Spectrum (1989)

Commodore C64 (1989)

Amstrad CPC (1989)

Atari ST (1989)

Commodore Amiga (1989)

Amstrad CPC (1990, "Le Monde des Merveilles")


Game's rom.

MAME Info:

0.56 [Yasuhiro Ogawa]

0.31 [Mirko Buffoni]


- 0.130u3: Sega System 1/2 rewrite [Aaron Giles]: Fixed some garbage gfx appear on the left side, when the player sprite reaches the right side of the playfield in wbmlb and wbmljb.

- 0.115u4: Replaced SN76496 sound with SN76489.

- 0.113u3: Nicola Salmoria added proper MC8123 decryption code and MC-8123B 317-0043.key to WBML. Changed description to 'Wonder Boy in Monster Land (Japan New Ver., MC-8123, 317-0043)' and clone '(Japan Old Ver.)' to '(Japan Old Ver., MC-8123, 317-0043)'.

- 0.108u3: David Haywood fixed gfx1 rom loading in clone (Galaxy Electronics English bootleg).

- 0.108u2: Swapped gfx1 roms ($0, 10000) in clone wbmlbg.

- 0.107u4: Swapped gfx1 roms ($0, 10000) in clone 'Wonder Boy in Monster Land (Galaxy Electronics English bootleg)'.

- 0.107u2: Added clone Wonder Boy in Monster Land (Galaxy Electronics English bootleg). Changed parent description to 'Wonder Boy in Monster Land (English bootleg)'.

- 0.89u6: MC8193 update [Nicola Salmoria]. Expanded the decryption tables. The tables for 317-0043 (wbml) and ninjakd2 derived by comparison of the original with the decrypted bootleg. They are incomplete but enough to fully decrypt the program - Game now playable.

- 0.79: Activate 'Test Mode' dipswitch.

- 0.56: Changed clone '(Japan set 2)' to parent 'Wonder Boy in Monster Land (Japan New Ver.)' and '(Japan set 1)' to '(Japan Old Ver.)'. Renamed (wbml) to (wbmlb), (wbmlj2) to (wbml), (wbmlj) to (wbmljo) and (wbmlju) to (wbmljb).

- 0.37b6: Added proms ($300 - timing? (not used)).

- 15th August 2000: Zsolt Vasvari added cocktail mode support to all games in Sega System1 driver except WBML.

- 0.36b15: Added 'Demo Sounds' dipswitch.

- 22nd November 1999: Eisuke Watanabe fixed a sprite problem in clone wbmlju.

- 0.36b1: Yasuhiro Ogawa added clones Wonder Boy in Monster Land (Japan set 1), (Japan set 2) and (Japan not encrypted). Fixed prom ($200) and rom names.

- 0.35: Karl Stenerud fixed sound in WBML.

- 2nd July 1999: Nicola Salmoria fixed Wonder Boy In Monsterland's sound.

- 0.33b3: Dani Portillo added high score saving to Wonder Boy in Monster Land.

- 0.31: Mirko Buffoni added 'Wonder Boy in Monster Land' (bootleg 1987), preliminary.

- 10th August 1997: Thierry (ShinobiZ) dumped Wonder Boy in Monster Land (English bootleg).


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Romset: 361 kb / 16 files / 197.3 zip

MAME XML Output:

       <game name="wbmlb" sourcefile="system1.c" cloneof="wbml" romof="wbml">
              <description>Wonder Boy in Monster Land (English bootleg)</description>
              <rom name="wbml.01" size="65536" crc="66482638" sha1="887f93015f0effa2d0fa1f1f59082f75ac072221" region="maincpu" offset="20000"/>
              <rom name="wbml.02" size="65536" crc="48746bb6" sha1="a0049cba53e7548afa8d7b16a7e9494e628d2a0f" region="maincpu" offset="30000"/>
              <rom name="wbml.03" size="65536" crc="d57ba8aa" sha1="16f095cb78e31af5ce76d36c20fe4c3e0d027aea" region="maincpu" offset="38000"/>
              <rom name="epr11037.126" merge="epr11037.126" size="32768" crc="7a4ee585" sha1="050436106cced5dcbf40a3d94d48202eedddc3ad" region="soundcpu" offset="0"/>
              <rom name="wbml.08" size="32768" crc="bbea6afe" sha1="ba56c6789a35eb57cd226296ebf57e9aa19ba625" region="tiles" offset="0"/>
              <rom name="wbml.09" size="32768" crc="77567d41" sha1="2ac501661522615859f8a1718dbb8451272d6931" region="tiles" offset="8000"/>
              <rom name="wbml.10" size="32768" crc="a52ffbdd" sha1="609375112268b770a798186697ecab5853f29f89" region="tiles" offset="10000"/>
              <rom name="epr11028.87" merge="epr11028.87" size="32768" crc="af0b3972" sha1="413825f66b84c7e45aa1855131482abead8f7f3b" region="sprites" offset="0"/>
              <rom name="epr11027.86" merge="epr11027.86" size="32768" crc="277d8f1d" sha1="7854673503ed03d276abe971805a11f8c992f6d6" region="sprites" offset="8000"/>
              <rom name="epr11030.89" merge="epr11030.89" size="32768" crc="f05ffc76" sha1="f3dbb518240f86430840c3d4cda04bac79c20f69" region="sprites" offset="10000"/>
              <rom name="epr11029.88" merge="epr11029.88" size="32768" crc="cedc9c61" sha1="dbe5744f9b6f2a406b52b910dd4e133db7bce6b2" region="sprites" offset="18000"/>
              <rom name="pr11026.20" merge="pr11026.20" size="256" crc="27057298" sha1="654be7abb937bb0720263ee6512e31194662effe" region="palette" offset="0"/>
              <rom name="pr11025.14" merge="pr11025.14" size="256" crc="41e4d86b" sha1="a86e8bb0a465d01b04410edfbb82eb96f12b909f" region="palette" offset="100"/>
              <rom name="pr11024.8" merge="pr11024.8" size="256" crc="08d71954" sha1="df045dbfb3d669e4d42fbdba1e7191cd046f7b47" region="palette" offset="200"/>
              <rom name="pr5317.37" merge="pr5317.37" size="256" crc="648350b8" sha1="c7986aa9127ef5b50b845434cb4e81dff9861cd2" region="proms" offset="0"/>
              <chip type="cpu" tag="maincpu" name="Z80" clock="20000000"/>
              <chip type="cpu" tag="soundcpu" name="Z80" clock="4000000"/>
              <chip type="audio" tag="mono" name="Speaker"/>
              <chip type="audio" tag="sn1" name="SN76489A" clock="2000000"/>
              <chip type="audio" tag="sn2" name="SN76489A" clock="4000000"/>
              <display tag="screen" type="raster" rotate="0" width="512" height="224" refresh="60.096154" pixclock="10000000" htotal="640" hbend="0" hbstart="512" vtotal="260" vbend="0" vbstart="224" />
              <sound channels="1"/>
              <input players="2" buttons="2" coins="2" service="yes">
                     <control type="joy" ways="8"/>
              <dipswitch name="Cabinet" tag="SWA" mask="1">
                     <dipvalue name="Upright" value="0" default="yes"/>
                     <dipvalue name="Cocktail" value="1"/>
              <dipswitch name="Demo Sounds" tag="SWA" mask="2">
                     <dipvalue name="Off" value="0"/>
                     <dipvalue name="On" value="2" default="yes"/>
              <dipswitch name="Lives" tag="SWA" mask="12">
                     <dipvalue name="3" value="4"/>
                     <dipvalue name="4" value="12" default="yes"/>
                     <dipvalue name="5" value="8"/>
              <dipswitch name="Bonus Life" tag="SWA" mask="16">
                     <dipvalue name="30000 100000 200000" value="16" default="yes"/>
                     <dipvalue name="50000 150000 250000" value="0"/>
              <dipswitch name="Difficulty" tag="SWA" mask="32">
                     <dipvalue name="Easy" value="32" default="yes"/>
                     <dipvalue name="Hard" value="0"/>
              <dipswitch name="Test Mode" tag="SWA" mask="64">
                     <dipvalue name="Off" value="64" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <dipswitch name="Unknown" tag="SWA" mask="128">
                     <dipvalue name="Off" value="128" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <dipswitch name="Coin A" tag="SWB" mask="15">
                     <dipvalue name="4 Coins/1 Credit" value="7"/>
                     <dipvalue name="3 Coins/1 Credit" value="8"/>
                     <dipvalue name="2 Coins/1 Credit" value="9"/>
                     <dipvalue name="2 Coins/1 Credit 5/3 6/4" value="5"/>
                     <dipvalue name="2 Coins/1 Credit 4/3" value="4"/>
                     <dipvalue name="1 Coin/1 Credit" value="15" default="yes"/>
                     <dipvalue name="1 Coin/1 Credit 2/3" value="1"/>
                     <dipvalue name="1 Coin/1 Credit 4/5" value="2"/>
                     <dipvalue name="1 Coin/1 Credit 5/6" value="3"/>
                     <dipvalue name="2 Coins/3 Credits" value="6"/>
                     <dipvalue name="1 Coin/2 Credits" value="14"/>
                     <dipvalue name="1 Coin/3 Credits" value="13"/>
                     <dipvalue name="1 Coin/4 Credits" value="12"/>
                     <dipvalue name="1 Coin/5 Credits" value="11"/>
                     <dipvalue name="1 Coin/6 Credits" value="10"/>
              <dipswitch name="Coin B" tag="SWB" mask="240">
                     <dipvalue name="4 Coins/1 Credit" value="112"/>
                     <dipvalue name="3 Coins/1 Credit" value="128"/>
                     <dipvalue name="2 Coins/1 Credit" value="144"/>
                     <dipvalue name="2 Coins/1 Credit 5/3 6/4" value="80"/>
                     <dipvalue name="2 Coins/1 Credit 4/3" value="64"/>
                     <dipvalue name="1 Coin/1 Credit" value="240" default="yes"/>
                     <dipvalue name="1 Coin/1 Credit 2/3" value="16"/>
                     <dipvalue name="1 Coin/1 Credit 4/5" value="32"/>
                     <dipvalue name="1 Coin/1 Credit 5/6" value="48"/>
                     <dipvalue name="2 Coins/3 Credits" value="96"/>
                     <dipvalue name="1 Coin/2 Credits" value="224"/>
                     <dipvalue name="1 Coin/3 Credits" value="208"/>
                     <dipvalue name="1 Coin/4 Credits" value="192"/>
                     <dipvalue name="1 Coin/5 Credits" value="176"/>
                     <dipvalue name="1 Coin/6 Credits" value="160"/>
              <driver status="good" emulation="good" color="good" sound="good" graphic="good" savestate="supported" palettesize="2048"/>

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