Videogame ROM prefixes and codes
Last updated on July 26, 2011, 19:59 by Sebastian Mihai
If you have somewhat of an interest in collecting and/or playing ROMs of older games, you may notice that their filenames have certain prefixes or suffixes. These codes are properties of a ROM, and hold information regarding its zone/language, legitimacy, origin. The list below should help with understanding these cryptic codes.
If you learn anything from this list, it should be that the roms with the [!] prefix are the roms of choice.
[b] Bad Dump
(-) Unknown Year
[!] Verified Good Dump
(M#) Multilanguage (# of Languages)
(??k) ROM Size
[C] Gameboy Color
(BS) BS ROMs (SNES)
[S] Super (Super Gameboy)
(ST) Sufami Turbo (SNES)
[BF] Bung Fix
(NP) Nintendo Power (SNES)
(PAL) Euro Version
(1) Japan (Genesis)
(4) USA (Genesis)
(5) NTSC Only (Genesis)
[hI??] Intro hacks
(8) PAL Only (Genesis)
(B) non USA
(Adam) ADAM Version (Coleco)
[x] Bad Checksum
(PC10) PlayChoice 10 (NES)
[M] Mono Only (Neogeo Pocket)
[hFFE] FFE Copier fmt
(1) Japan & Korea
(4) USA & BrazilNTSC
(B) non USA (Genesis)
(PD) Public Domain
(F) World (Genesis)
(FC) French Canadian
(Unk) Unknown Country
(HK) Hong Kong
[a] This is simply an alternate version of a
ROM. Many games have been re-released to
fix bugs or even to eliminate Game Genie
codes (Yes, Nintendo hates that device).
[b] A bad dump often occurs with an older
game or a faulty dumper (bad connection).
Another common source of [b] ROMs is a
corrupted upload to a release FTP.
[f] A fixed game has been altered in some way
so that it will run better on a copier
[h] Something in this ROM is not quite as it
should be. Often a hacked ROM simply has
a changed header or has been enabled to
run in different regions. Other times it
could be a release group intro, or just
some kind of cheating or funny hack.
[o] An overdumped ROM image has more data
than is actually in the cart. The extra
information means nothing and is removed
from the true image.
[t] A trainer is special code which executes
before the game is begun. It allows you
to access cheats from a menu.
[!] Verified good dump. Thank God for these!
(BS) These Japanese ROMs were distributed
through a satellite system in Japan
known as the Broadcast Satellaview.
They were transmitted along with a TV
show which was connected to the game in
some way. These games were only playable
during the show, and thus stop after an
hour, and many were timed so that only
certain time periods were playable.
(ST) The Sufami Turbo device allowed two
GameBoy sized carts to be plugged into
the SNES. Certain carts combined into
new games much like the Sonic & Knuckles
lock-on technology by Sega.
(NP) Nintendo Power has been known to release
games only available to its subscribers.
Most of these ROMs are Japanese, as this
practice occured mainly in Japan.
(1) Carts with this code will run on both
Japanese and Korean machines.
(4) While this code is technically the same
as a (U) code, it is a newer header
format and represents that the cart will
run on USA and Brazil NTSC machines.
(B) This country code indicates that the
cart will run on any non US machine.
[c] This code represents a cart with known
faulty checksum routines.
[BF] Bung released a programmable cartridge
compatable with the GameBoy which could
hold any data you wished to play.
However, many games do not function on
Bung v1.0 carts and have to be 'fixed.'
PC10 The PlayChoice 10 was an arcade unit
which played exact copies of NES games
in an arcade cabinet. The machines had a
choice of 10 games to choose from and
ran for about 3 minutes on 25 cents.
VS The Versus system ran on similar hard-
ware to the PC10 machines, but simply
allowed you to play against each other.
If you use the materials on this page, or any other page on this web site, you do so at your own risk. They are provided "as is". No warranty is provided or implied. I neither guarantee that the materials will work, nor that they will not be harmful in any way.