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Heavy Barrel (World)

| 1987

Release type:
Units produced: Data East Corporation
Controls/Input Device: Control(dial), Buttons(2)
Number of Players: 2
More Creator:
More Coder/Software:
License from/Copyright:
SoundMix: Mono
More Graphics/Artwork:
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Acting Talent involved:
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MAME folder name: hbarrelw

Display: raster 256x240 @ 57.41Hz (57.41 pixclock)
Sound: 1 channels

Emulated in MAME via driver dec0.c:
Status: good; Emulation: good
Graphic: good; Sound: good; Color: good
Palette size: 1024; Savestate: unsupported

hb02.bin with 65536kb
sha1:684f67dc92f2a3bd77effce68c50e4013e054d31 crc:815536ae
hb05.bin with 65536kb
sha1:625a33c2f4feed56f636d318531d0996cdee9194 crc:2087d570
hb09.bin with 65536kb
sha1:25732986d787afd99a045ce4587f1079f84e675b crc:26240ea0
hb10.bin with 65536kb
sha1:d2ffe96a19cfcbddee0df07dad89bd83cba801fa crc:47d95447
hb11.bin with 65536kb
sha1:00905e59dec90bf51f1d8e2482f54ede0895d142 crc:5c768315
hb12.bin with 65536kb
sha1:4d880d97a8eabd9b0a50cba3357df4f70afdf909 crc:8b64d7a4
hb13.bin with 65536kb
sha1:e7e4a53a7a18c81af8e395a33bcd82a41482c0da crc:56e3ed65
hb14.bin with 65536kb
sha1:9db9c632fbf5a98d2d21bb960cc7111f6f9410fc crc:bedfe7f3
hb15.bin with 65536kb
sha1:859a70dfc7d8c01124a035dcd5ea554af5f4e871 crc:21816707
hb16.bin with 65536kb
sha1:2dfe429cd6e110645ab976dd3a2b27d54ad91e89 crc:a5684574
hb17.bin with 65536kb
sha1:ee422f8479c1f21bb62d040567a9748b646e6f9f crc:a4f186ac
hb18.bin with 65536kb
sha1:d66a8c685c44cc8583527297d7ea7778f0d9c8db crc:ef664373
hb19.bin with 65536kb
sha1:eaef6ed5505395b1b829d6a126363031ad4e851a crc:d6b47869
hb20.bin with 65536kb
sha1:cce46b91104c0ac4038e98131fe957e0ed2f1a88 crc:2fc13be0
hb21.bin with 65536kb
sha1:959f9e2461db5f08b7ab12cc3b43f33be69318c9 crc:f01d75c5
hb22.bin with 65536kb
sha1:e7b464f34d6f3796823de6fdcbfd79416f71a119 crc:50d6a1ad
hb23.bin with 65536kb
sha1:7b29d6d606319337562b0431b6290df15cde17e2 crc:bbdaf771
hb24.bin with 65536kb
sha1:a9aa520044f5b5037a495402ef128d3d8522b20f crc:ae377361
hb27.bin with 65536kb
sha1:2faeb287d685c8ea72c21658777f62ff9e194a69 crc:99db7b9c
hb28.bin with 65536kb
sha1:ef150dd5bc22368857ba27da18a17c161bb807a4 crc:33ce2b1a
hb29.bin with 65536kb
sha1:d258134a95bb223db139780b8e7377cccbe01af0 crc:5514b296
hb30.bin with 65536kb
sha1:0f09143fed7c354231a4f343d0371424d8436877 crc:5855e8ef
hb_ec01.rom with 65536kb
sha1:4edea085dedab46995b07d134b0974e365c32bfe crc:6756f8ae
hb_ec03.rom with 65536kb
sha1:2af04de911f759b20ecec3aaf96238545c6cc987 crc:720c6b13
hb_ec04.rom with 65536kb
sha1:53c9b78ce12ab577111fd96ef793b0fc4131bec3 crc:d01bc3db
hb_ec06.rom with 65536kb
sha1:9cd87fb896e746dc7745c59396cf5b06a9c6fae1 crc:61ec20d8
hb_ec07.rom with 32768kb
sha1:27eb8c09be6b1be502bda9ae9c9ff860d2560d46 crc:16a5a1aa
hb_ec08.rom with 65536kb
sha1:cae503e446c7164a44b59886680f554a4cb1eef2 crc:2159a609
hb_ec25.rom with 65536kb
sha1:b730ce11db1876b81d2b7cde0f129bd6fbfeb771 crc:2e5732a2
hb_ec26.rom with 65536kb
sha1:fbfa97ecc8b4d540d38f811ebb6272b348ed37e5 crc:161a2c4d
Mameinfo.dat entry:
0.37b10 [Yochizo]


- 0.147u2: hap fixed clone Omega Fighter Special. The game fails to boot or finish post. After showing bad rom errors, the game resets.

- 0.147u1: Fixed maincpu rom loading.

- 0.122u7: Fixed gfx1/2/3/4/5 rom loading.

- 0.89u3: Changed Z80 CPU2 clock speed to 5MHz.

- 0.37b10: Yochizo added 'Omega Fighter' (UPL 1989) and clone Omega Fighter Special.

- 21st November 2000: Yochizo fixed some graphics bugs in the Omega Fighter / Atomic Robo-kid driver.

- 8th November 2000: Yochizo sent in a driver for Omega Fighter and Atomic Robo-kid.

- 25th April 1999: Dumped Omega Fighter Special.

LEVELS: 8 (restarts once)

Other Emulators:

* FB Alpha


* Raine

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Romset: 2016 kb / 8 files / 457.8 zip

Credits Mameinfo and Mametesters Project Robert J. Rabgno et al.
History.dat entry:
Heavy Barrel (c) 1987 Data East.

Heavy Barrel is a scrolling shoot-em-up for one or two players, in which an army of terrorists have seized control of a nuclear missile facility. Players must infiltrate the heavily defended base and shoot their way through seven levels before reaching the final enemy Boss confrontation.

As with SNK's "Ikari" series, Heavy Barrel allows players to rotate their on-screen character and fire and move in all directions. Additional weapons and power-ups can be found, as well as keys which are used to open locked weapon containers that litter the levels.

In addition to the standard in-game weapons, the "Heavy Barrel" gun of the game's title also features. This must be assembled by collecting six different components (found in locked weapon containers). Once completed, the Heavy Barrel gives the player incredible firepower and instantly destroys anything it hits (with the exception of end-of-level bosses, which take several hits), although the Heavy Barrel only lasts for a period of thirty seconds, as indicated by a depleting red bar displayed at the top of the screen.


Main CPU : Motorola 68000 (@ 10 Mhz)
Sound CPU : MOS Technology M6502 (@ 1.5 Mhz)
Sound Chips : YM2203 (@ 1.5 Mhz), YM3812 (@ 3 Mhz), OKI6295 (@ 7.757 Khz)

Players : 2
Control : dial
Buttons : 2


Heavy Barrel was released in December 1987 in Japan.

Alfa Records released a limited-edition soundtrack album for this game (Data East Game Music - 28XA-205) on May 19, 1988.


The game's objective is to wipe out a military complex filled with soldiers and lethal military equipment. The available weapons are the standard machine gun, the heavy machine gun, the fan gun, the flame thrower and the Heavy Barrel. Grenade weapons include standard grenades, red grenades, and ball and chains.

The Heavy Barrel is a super weapon that is obtained by collecting six special gun pieces found in locked weapons containers. The Heavy Barrel gun has unlimited ammunition and destroys everything you hit with it. It does, however, only last for a short time, indicated by a depleting red meter at the top of the screen.

Throughout the game there are only enough pieces to assemble the Heavy Barrel three times, but collecting the components is definitely recommended, as certain sections, and particularly the final boss battle, are practically impossible to survive without it.

At the start, you will parachute in. Massacre a bunch of guys until you encounter a man with a tripod machine gun. Kill him, then get the heavy machine gun weapon. Use this to wipe out the small tank next to the bridge.

There are Four boxes to the left of the bridge. A heavy barrel part is in the second box from the right. Pick up the flame-thrower and start shooting the guards and flying packs that come from across the bridge. After they're dead, a chopper will fly in and attempt to kill you. Throw grenades at it, don't waste the flame-thrower. Assuming you have sufficient dodge skill, you can kill the chopper before it overwhelms you with bullets.

Across the bridge a large number of troops will attack you. Here is where the flame-thrower is useful--it takes out a lot of troops at once. Next to the pyramid machine gun are three boxes--kill the gunner, then open up the left-most box. That reveals a red grenade icon. Pick that up and start grenading your way to the gate.

At the gate, grenade everyone (you have 70 grenades to start with) and keep pushing forward.

At three points in the game you will be on a moving platform. In anticipation of these difficult points you should have red grenades and fan guns or a flame-thrower. If troops jump on the platform you ought to grenade them, since the gun should always be saved for destroying heavy machinery. The first platform is a series of cannons which can be destroyed with a single grenade, followed by a number of guards who can be killed with a single red grenade thrown to the exact center of the screen. At the end is a machine with large grabbers that extend towards you. Stay on the left of the platform and start flaming it and throwing grenades simultaneously. The machine rarely grabs on the left, so with luck you should be able to destroy it without a loss.

The second platform passes by a large number of cannons and it is imperative that you destroy as many as possible, since they FOLLOW the platform and shoot large cannonballs at you. Here is where dodging is useful, since it's hard to keep the number of cannonballs on the screen to less than twenty.

The third platform consists of a series of flying guards, then TWO of the mechanical grabber machines show up. Fortunately one attacks first, on the right, so you should stay on the left and disable it ASAP, then switch right and disable the other.

There is, at some point in the game, a narrow bridge which is the killing zone for two helicopters. You should have good weapons, and run up while facing backwards. Hopefully you can flame and destroy it, after which you can dodge the other until you kill it. If you die, pick up the fan gun sitting on the bridge, and use it.

At another point you will be confronted with two conveyor belts (which you cannot ride) going in opposite directions. Due to the obstructions in the middle you ought to use the Heavy Barrel here to blow everyone away, and run through as quickly as possible.

At another point you will have to run a gauntlet of cannons and grenade-throwing guards. To deal with this, DON'T use the HB, since you will not be able to get enough parts to kill the last guy. You should get a flame-thrower, and fire left even before the enemies show up on the screen. They will die and you can walk left to collect more weapons as they appear.

Another large machine spits out glowing needles that split into three parts and angle downwards. You should dodge left and right methodically while tossing grenades and firing. Don't look at the machine. Just keep doing that while looking at the needles and dodging. Lives are much more important than keeping a hoard of weapons.

At one point you will meet three Predator-like creatures. You can destroy these three using machine gun or simple grenades, though they look tough. Only one or two fire slow shots at a time, so you can dodge them. Keep pumping bullets into them until one explodes.

The final gauntlet is very difficult. Enemy guards throw red grenades right and left, 'copters keep charging you, and more predators show up. You should keep moving forward, never getting stuck in one position, since if you press on you ought to be able to get the grenade throwers before they let off one throw. Keep your ammo well stocked by picking up new guns, even if you still have 20 shots left. Red grenades are essential here--the ball and chain is too slow to deal with so many guys.

You are near the end when you drive off the laughing guy... pick up the next box on the left, get the Heavy Barrel, walk north, and finish the game.

A few obvious reminders--you can only carry four keys, so if you have four and more are lying around, open up boxes. They can contain extra lives, shields, red grenades, weapons, a cloud gun (which is virtually useless), and HB parts. Learning where the HB parts are is pretty important too. But most essential is learning when to conserve your ammo and when to cut loose with everything you have.

The high score is essentially meaningless, since at the end you have about 400k points and you get one million for killing the last guy.


1. Heavy Barrel (1987)
2. Midnight Resistance (1989)


Game designer : Koji Akibayashi
Programmers : Mentaiko, Nobusuke Sasaki, Naomi Susa, Satoshi Imamura, Toshinari Ueda
Graphic designers : J.S, Back Man, Masanori Tokoro, T. Adachi, Yoshiyuki Urushibara, Mix Man
Music and sound : Azusa Hara (AZUSA), Hiroaki Yoshida
Hardware designers : Junichi Watanabe, Kenichi Fujimoto, Hiroyuki Iwabe


* Consoles :
Nintendo Famicom [JP] (March 2, 1990) "Heavy Barrel [Model DFC-XH]"


Edit this entry: http://www.arcade-history.com/?&page=detail&id=1108&o=2

Licensed from Alexis Bousiges under a CC Attribution 3.0 License
cheat.dat entry:
00000000 FF8032 00000080 FFFFFFFF Invincibility PL1
00000000 FF8033 00000080 FFFFFFFF Super Invincibility PL1
00000000 FF8052 00000004 FFFFFFFF Infinite Keys PL1
00000000 FF8034 00000005 FFFFFFFF Infinite Lives PL1
00000000 FF8043 00000099 FFFFFFFF Infinite Fire Gun PL1
00000000 FF8045 00000099 FFFFFFFF Infinite Multi-Way Shot PL1
00000000 FF8047 00000099 FFFFFFFF Infinite Flamethrower PL1
00000000 FF804D 00000099 FFFFFFFF Infinite Grenades PL1
00000000 FF804F 00000099 FFFFFFFF Infinite Smoke Bomb PL1
00000000 FF8051 00000099 FFFFFFFF Infinite Chain Thrower PL1
00000000 FF8711 00000099 FFFFFFFF Infinite Super Weapon PL1
62000000 000000 00000000 00000000 Select Weapon PL1
00010000 FF803C 00000000 FFFFFFFF Normal
00010000 FF803C 00000001 FFFFFFFF Laser
00010000 FF803C 00000002 FFFFFFFF Multi-Way
00010000 FF803C 00000003 FFFFFFFF Flamethrower
62000000 000000 00000000 00000000 Select Grenade PL1
00010000 FF8049 00000000 FFFFFFFF Normal
00010000 FF8049 00000001 FFFFFFFF Red
00000000 FF8710 00000080 FFFFFFFF Always have the Super Gun PL1
00000000 FFA59F 000000D8 FFFFFFFF Special Weapon Ammo PL1
60000000 000000 00000000 00000000
00000000 FF8076 00000080 FFFFFFFF Invincibility PL2
00000000 FF8077 00000080 FFFFFFFF Super Invincibility PL2
00000000 FF8096 00000004 FFFFFFFF Infinite Keys PL2
00000000 FF8078 00000005 FFFFFFFF Infinite Lives PL2
00000000 FF8087 00000099 FFFFFFFF Infinite Fire Gun PL2
00000000 FF8089 00000099 FFFFFFFF Infinite Multi-Way Shot PL2
00000000 FF808B 00000099 FFFFFFFF Infinite Flamethrower PL2
00000000 FF8091 00000099 FFFFFFFF Infinite Grenades PL2
00000000 FF8093 00000099 FFFFFFFF Infinite Smoke Bomb PL2
00000000 FF8095 00000099 FFFFFFFF Infinite Chain Thrower PL2
00000000 FF8755 00000099 FFFFFFFF Infinite Super Weapon PL2
62000000 000000 00000000 00000000 Select Weapon PL2
00010000 FF8080 00000000 FFFFFFFF Normal
00010000 FF8080 00000001 FFFFFFFF Laser
00010000 FF8080 00000002 FFFFFFFF Multi-Way
00010000 FF8080 00000003 FFFFFFFF Flamethrower
62000000 000000 00000000 00000000 Select Grenade PL2
00010000 FF808D 00000000 FFFFFFFF Normal
00010000 FF808D 00000001 FFFFFFFF Red
00000000 FF8754 00000080 FFFFFFFF Always have the Super Gun PL2

Credit Pugsy's MAME Cheat file