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Star Force

| 1984

Release type:
Units produced: Tehkan
Controls/Input Device: Control(joy8way), Buttons(1)
Number of Players: 2
More Creator:
More Coder/Software:
License from/Copyright:
SoundMix: Mono
More Graphics/Artwork:
More Music/Sound:
Acting Talent involved:
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MAME folder name: starforc

Display: raster 256x224 @ 60.00Hz (60.00 pixclock)
Sound: 1 channels

Emulated in MAME via driver senjyo.c:
Status: good; Emulation: good
Graphic: good; Sound: good; Color: good
Palette size: 514; Savestate: unsupported

07b.bin with 32kb
sha1:33cd6b5ed92d7b73a708f2e4b12b6e7f6496d0c6 crc:68db8300
starforc.1 with 8192kb
sha1:1bd0558e05b41aebab3911991969512df904fea5 crc:2735bb22
starforc.10 with 8192kb
sha1:9ce0e29630d3c8cba4db4cff333b250481348968 crc:c62a19c1
starforc.11 with 8192kb
sha1:62eb0df48f2f0c5778bb230cc3bf0b8eb3b4e3f8 crc:668aea14
starforc.12 with 8192kb
sha1:3766835d9e9fc7e5dd99521e7303562029b78a65 crc:fdd9e38b
starforc.13 with 8192kb
sha1:f4d6dfa3968fbd8ebf1a6451d5ea1821d65d9b49 crc:84603285
starforc.14 with 8192kb
sha1:3aaa9cc64ef3775325f64733da4f6c328abf6514 crc:9e9384fe
starforc.15 with 8192kb
sha1:3748ea8e34222a31a365a02ec77430f268b0b397 crc:c3bda12f
starforc.16 with 4096kb
sha1:60177a669d9c8cbeedd03ca5e2edf3f589c1c815 crc:ce20b469
starforc.17 with 4096kb
sha1:1152ba0c274ecadb534133a860bbc8a93577dcf2 crc:68c60d0f
starforc.18 with 4096kb
sha1:b163ccd3dc26ccfa8be1d16d52e17bc660ff84e3 crc:6455c3ad
starforc.2 with 16384kb
sha1:0743e3928d5cc0e3f1bcdaf4b0cc83aeb7a2f7a8 crc:0fc4d2d6
starforc.3 with 16384kb
sha1:2b8b1e634ef5bed5c61a078e64a6dda77f84cdf5 crc:8ba27691
starforc.4 with 16384kb
sha1:34c60d2b34c7980bf65a5ebadb9c73f89128141f crc:dd9d68a4
starforc.5 with 16384kb
sha1:bf673571f772d8e0eddae89c00f31390c49a25d2 crc:f71717f8
starforc.6 with 16384kb
sha1:4a1196d4cfb99616efdac9b3927609a85c6f1758 crc:5468a21d
starforc.7 with 4096kb
sha1:a119d68c2dd1c0e191231ce77353b31f30f7aa76 crc:f4803339
starforc.8 with 4096kb
sha1:bb4f7d3afc8dfaa723dfb5374996cc4bfd76fa3c crc:96979684
starforc.9 with 4096kb
sha1:7c9165ed227c5228122b494a265cbfd6e843ba61 crc:eead1d5c
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

Recommended Games (Star Force):




Night Star (DECO Cassette)

Nova 2001

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Star Force

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Alpha Mission II / ASO II

Astro Warrior (Mega-Tech)

Mission 660


S.R.D. Mission

Truxton / Tatsujin

Tatsujin (Tourvision PCE bootleg)

Truxton II / Tatsujin Oh

Blast Off

Blazing Lazers

GunHed (Tourvision PCE bootleg)

The Next Space

Omega Fighter

Super Star Soldier (Tourvision PCE bootleg)

Lethal Thunder


Strike Gunner S.T.G


Explosive Breaker

Final Star Force




Nebulas Ray



Viper Phase 1

Fever SOS

Mars Matrix: Hyper Solid Shooting

Romset: 2016 kb / 8 files / 457.8 zip

Credits Mameinfo and Mametesters Project Robert J. Rabgno et al.
History.dat entry:
Star Force (c) 1984 Tehkan.

A single player, vertically scrolling shoot-em-up in which the player pilots a spaceship over series series of islands - drifting in outer-space space - shooting enemy spacecraft and ground-based targets. Special symbols appear at regular intervals and can be shot or collected for bonuses and power-ups. Each level has an end-of-level boss that must be defeated before the player can progress to the next level, while the levels themselves are designated by letters of the Greek alphabet.


Main CPU : Zilog Z80 (@ 4 Mhz)
Sound CPU : Zilog Z80 (@ 2 Mhz)
Sound Chips : (3x) Texas Instruments SN76496 (@ 2 Mhz), Custom (@ 2 Mhz)

Players : 2
Control : 8-way joystick
Buttons : 1


Released in September 1984.

This game is known in US as "Megaforce".


* A Trick : You can determine which direction the end of level boss will move before it even appears by looking at your score. If the hundreds digit is odd, the boss will move to the left. If it is even, it'll move right (the tens and units digits are always zero).

* One Million Points Bonus : On the violet continent, if you see a coelacanth fossil on the left side, go to the -right- side and shoot. Cleopatra appears - shoot her and you'll get a million-point bonus. The coelacanth may only appear on the third violet continent.

* 80,000 Points Bonus : At some points in the game you will see two columns of green arrows down the center of the screen. Concentrate on either the left or right column of these arrows, and try to shoot 16 in a row. You will be awarded an 80,000 bonus for doing this. The first time these appear, it is possible to get two such bonuses in a row (if there are not many enemies around!), and sometimes more if the level ends before the column has finished appearing. Later on there is a short column of only 16, so only one bonus is possible here.

* 50,000 Point Bonus : You've seen a big enemy that combines into parts. When you hear the tune it is about to appear, STOP SHOOTING (You don't actually have to stop shooting altogether, but if you hit part of the enemy before the center part flashes white the bonus will not work). Position your ship so that you are just underneath the center part of the enemy and wait for it to flash white. Once this has happened, shoot the center part several times : the enemy will be destroyed and you will be awarded the 50,000 point special bonus.


1. Star Force (1984, Arcade)
2. Super Star Force [Model TCF-ST] (1986, Famicom)
3. Final Star Force (1992, Arcade)


Music and Sound FX: Shinichi Sakamoto (Cheabow), Tsukasa Masuko (Matsu)


* Consoles :
Sega SG-1000 (1985, Sega)
Nintendo Famicom (1987)
Nintendo Super Famicom [JP] (Jul. 07, 1995, "Caravan Shooting Collection [Model SHVC-AS8J-JPN]")
Sony PlayStation 2 (2004, "Tecmo Hit Parade")
Microsoft XBOX (2005, "Tecmo Classic Arcade")

* Computers :
MSX (1985)
Sharp X68000 (1993 - Dempa)


Edit this entry: http://www.arcade-history.com/?&page=detail&id=2614&o=2

Licensed from Alexis Bousiges under a CC Attribution 3.0 License
cheat.dat entry:
20800000 1848 000000C9 FFFFFFFF Invincibility
00000001 8412 00000008 FFFFFFFF 1 Hit to Kill Boss Now!
00000000 8547 00000080 FFFFFFFF Always Fast Shooting
00000000 800A 00000000 FFFFFFFF Rapid Fire
00000703 8179 00000077 FFFFFFFF Select next level
00000701 8179 00000077 FFFFFFFF Select current level
00000100 83F5 000000F0 FFFFFFFF Select Horizontal Speed
00000100 83F6 000000F0 FFFFFFFF Select Vertical Speed
60000000 0000 00000000 00000000
00000000 8166 00000009 FFFFFFFF Infinite Lives PL1
00000001 817E 000000F9 FFFFFFFF 1 Hit to goto Boss Now! PL1
00000000 8198 00000009 FFFFFFFF Infinite Lives PL2
00000000 81B0 000000F9 FFFFFFFF 1 Hit to goto Boss Now! PL2

Credit Pugsy's MAME Cheat file