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Cowering's GoodTools[1] is a suite of 35 ROM auditing applications for Windows that contain a database listing known software for various video game consoles and home computers.

These tools, released as freeware, have established themselves as an important reference for ROM collectors, especially for older systems that don't have similar authoritative sources and that have a perfect or almost perfect coverage in GoodTools.

The popularity of GoodTools originated the practice of distributing, instead of single or arbitrarily collected ROMs, the so-called "goodsets", packaged archives of every ROM for a particular platform that GoodTools recognizes.

As the last entry on Cowering's blog is from 2016 and most of the download links don't work anymore, this project can be considered discontinued.

List of systems covered by GoodTools[edit]

Name System Version ROMs listed Release Date
Good2600 Atari 2600 3.14 7,216 22 September 2007[1]
Good5200 Atari 5200 2.01 284 6 April 2004[1]
Good7800 Atari 7800 3.28 932 3 April 2016[1]
GoodChaF Fairchild/Luxor/Zircon/SABA Fairchild Channel F 3.1415 88 18 March 2010[1]
GoodCoCo Tandy Color Computer 3.27 184 13 March 2016[2]
GoodCol ColecoVision 3.14 459 24 November 2007[1]
GoodCPC Amstrad CPC 3.1415 27,103 11 March 2010[1]
GoodGB64 Commodore 64 3.00 17,067 13 January 2006[1]
GoodGBA Nintendo Game Boy Advance 3.27 37,145 13 March 2016[1]
GoodGBx Nintendo Game Boy/Game Boy Color 3.14 9,333 10 November 2007[1]
GoodGCOM Tiger 3.27 40 13 March 2016[1]
GoodGen Sega Mega Drive/Genesis/32X 3.21 8,563 20 October 2012[3]
GoodGG Sega Game Gear 3.20 1,020 20 September 2012[4]
GoodINTV Mattel Intellivision 2.03 238 1 July 2004[1]
GoodJag Atari Jaguar 2.01 139 27 February 2004[1]
GoodLynx Atari Lynx 2.01 300 4 March 2004[1]
GoodMO5 Thomson MO5 3.1415 391 14 March 2010[1]
GoodMSX1 Microsoft MSX 0.999.3 589 3 October 2003[1]
GoodMSX2 Microsoft MSX2 0.999.3 166 3 October 2003[1]
GoodMTX Memotech MTX 3.1415 98 14 March 2010[1]
GoodN64 Nintendo 64/Nintendo 64DD 3.27 5,282 13 March 2016[5]
GoodNES Nintendo Entertainment System/Famicom 3.23b 22,096 26 April 2014[1]
GoodNGPx SNK Neo Geo Pocket/Neo Geo Pocket Color 3.27 452 13 March 2016[1]
GoodOric Oric/Atmos/Telestrat 2.01 1,236 3 March 2004[1]
GoodPCE NEC TurboGrafx-16/PC Engine 1.09a 1,565 25 August 2003[1]
GoodPico Sega Pico 3.15 178 28 February 2012[1]
GoodPSID Commodore 64 PSID music 3.22 37,499 8 November 2012[6]
GoodSAMC Miles Gordon Technology SAM Coupé 2.03 796 27 June 2004[1]
GoodSMS Sega Master System 3.20 1,516 20 September 2012[7]
GoodSNES Super Nintendo Entertainment System/Super Famicom/Satellaview 3.27 24,508 13 March 2016[1]
GoodSPC Super Nintendo Entertainment System (SPC music) 3.22 57,154 8 November 2012[8]
GoodSV Watara Supervision 3.27 69 13 March 2016[9]
GoodVBoy Nintendo Virtual Boy 3.1415 179 16 March 2010[1]
GoodVect General Computer Vectrex 1.06 287 17 July 2003[1]
GoodWSx Bandai WonderSwan/WonderSwan Color 3.27 377 13 March 2016[1]

Hosting license[edit]

Cowering allows only GoodTools with a version number below 3.00 to be hosted online. Those of a higher version number are only obtainable legally from the author's site.

Ancillary tools[edit]

Several utilities depend on GoodTools:

GoodGUI is a graphical front end to GoodTools.

GoodMerge is a program that organizes and optimizes the compression of ROM collections by placing all versions of a particular game into one archive, reducing the number of files and significantly increasing compression when using solid file archivers such as 7-Zip.

UnGoodMerge is a program to extract ROM images from archives (such as those created by GoodMerge, hence the name) according to rules, such as only one variant of a game and no bad dumps, in order to leave behind redundant ROMs.

Good codes[edit]

The following are codes and naming schemes given to the majority (some system specific) ROM image sets for various home computer and video game consoles. Please note that some codes (such as the Sega Genesis country codes) are only on old GoodTools versions and only remain for reference.

Standard codes[edit]

Good code Meaning of code Explanation
[!] Verified good dump The ROM is an exact copy of the original game; it has not had any hacks or modifications.
[a] Alternative version The ROM is a copy of an alternative release of the game. Many games have been re-released to fix bugs or to eliminate Game Genie codes.
[b] Bad dump A ROM image which has been corrupted because the original game is very old, because of a faulty dumper (bad connection) or during its upload to a release server. These ROMs often have graphic errors or sometimes don't work at all.
[f] Fixed dump A fixed dump is a ROM that has been altered to run better on a flashcart or an emulator.
[h] Hacked ROM The ROM has been user modified, with examples being changing the internal header or country codes, applying a release group intro, or editing the game's content.
[o] Overdumped ROM The ROM contains more data than the original game. This extra data is useless and doesn't affect the game at all; it just makes the ROM bigger.
[p] Pirated version A dump of a pirated version of a game. These ROMs often have their copyright messages or company names removed or corrupted. Also, many ROMs contain "intro" screens with the name and symbols of the pirate group that have released them.
[t] Trained version A trainer (special code which executes before starting the actual game) has been added to the ROM. It allows the player to access cheats from a menu or ingame.
[!p] Pending dump This is the closest dump to the original game to date, but the proper ROM is still waiting to be dumped.

Country codes[edit]

Country code Country
(A) Australia
(As) Asia
(B) Brazil
(C) Canada
(Ch) China
(D) Netherlands (Dutch)
(E) Europe
(F) France
(G) Germany
(Gr) Greece
(HK) Hong Kong
(I) Italy
(J) Japan
(K) Korea
(Nl) Netherlands
(No) Norway
(R) Russia
(S) Spain
(Sw) Sweden
(U) United States
(UK) United Kingdom
(W) World
(Unl) Unlicensed
(PD) Public domain, free software and freeware
(Unk) Unknown country

Universal codes[edit]

Code Meaning of code
(NG-Dump Known) No good dump has been found
(REVXX) Revision number (00 is earliest)
(VX.X) Version number (1.0 is earliest)
(M#) Multilanguage; # of languages (selectable by a menu)
[T+XXX] Most recent translation
[T-XXX] Obsolete translation
 ??-in-1 Pirate multicart
(Vol #) Official multicart
(GCN) GameCube rip
(VC) Games from Nintendo Wii Virtual Console (mostly LCD/epilepsy patches)
[h#C] Hacked internal cartridge information
[h#+#C] Hacked internal cartridge information; #th variant
[hI] Hacked dumping group intro
[hIR] Hacked dumping group intro removed
[M] Mono-color game
(Alpha) Alpha version
(Beta) Beta version
(Prototype) Prototype version
(Pre-Release) Pre-release version
(Kiosk Demo) Demonstration version available at Kiosks
(Hack) ROM hack
(Menu) Multicart menu, unselectable options
ZZZ_UNK Unclassified ROM
BIOS Copy of console's basic in/out system
(N64DD) Nintendo 64DD ROM
(##MBit) ROM size in megabits
(##k) ROM size in kilobits
(19XX) Release year (20th Century)
(20XX) Release year (21st Century)
(Atmos) Atmos ROM (GoodOric only)
(Telestrat) Telestrat ROM (GoodOric only)
[R] RSID format (GoodPSID only)
(old) Old version
[R-XXX] Language
(SC-3000) SC-3000 cartridge (GoodSMS only)
(SG-1000) SG-1000 cartridge (GoodSMS only)
(SF-7000) SF-7000 cartridge (GoodSMS only)
(GG2SMS) Master System mode (GoodGG only)
(Cart) Cartridge format
(Adam) ADAM version (GoodCol only)
(Compilation) The ROM is a dump of a compilation
(Ch-Trad) Pirate traditional Chinese game
(Ch-Simple) Pirate simple Chinese game
[f#C] Hack, only cart name is changed
[f#+#C] Hack, only cart name is changed; #th variant
(PAL) European TV Display Standard
(NTSC) American or Japan TV Display Standard

Translation codes:

Code Country
Alb Albanian
Ara Arabic
Bra Brazilian Portuguese
Can Canadian French
Chi Chinese
ChS / SChi Simplified Chinese
ChT / TChi Traditional Chinese
Cro Croatia
Dan Danish
Dut Dutch
Eng English
Esp Esperanto
Fil Filipino
Fin Finnish
Fre French
Ger German
Gre Greek
Heb Hebrew
Ita Italian
Jap Japanese
Kor Korean
Lat Latvian
Lit Lithuanian
Nor Norwegian
Pol Polish
Por Portuguese
Rom / Rum Romanian / Rumanian
Rus Russian
Ser Serbian
Spa Spanish
Swe Swedish
Tai Thai
Tur Turkish
Uru Uruguay Spanish

System specific codes[edit]

GoodGBA codes:

Code Meaning of code
[hIR00] Intro removed; replaced with 00 values
[hIRff] Intro removed; replaced with ff values
[f_?] Removed EEPROM_V124 patched
[v] Game Boy Advance video
[eb] E-book ROM
[eba] E-Book Advance ROM
[ebb] Book Reader Advance ROM
[f125] Removed EEPROM_V125
[f126] Removed EEPROM_V126
(IQue) Chinese Game Boy Advance ROM for IQue console
Coleco on GBA Emulated ColecoVision ROM via Coleco on GBA emulator
Cologne Emulated ColecoVision ROM via Cologne emulator
DrSMS Emulated Master System ROM via DrSMS emulator
FooN Emulated ZX Spectrum ROM via FooN emulator
PocketNES Emulated NES ROM via PocketNES emulator
FC2GBA Emulated NES ROM via FC2GBA emulator
Goomba Emulated Game Boy ROM via Goomba emulator
GBAGI Emulated Adventure Game Interpreter ROM via GBAGI emulator
Swanadvance Emulated WonderSwan ROM via Swanadvance emulator
PCEAdvance Emulated TurboGrafx-16 ROM via PCEAdvance emulator
PocketSMS Emulated Master System ROM via PocketSMS emulator
PocketSNES Emulated SNES ROM via PocketSNES emulator
SNESAdvance Emulated SNES ROM via SNESAdvance emulator
Snezzyboy Emulated SNES ROM via Snezzyboy emulator
VGB Emulated Game Boy ROM via VGB emulator
Pogoshell Program for Pogoshell tool
s##e## Series number and episode number for videos
(MB) Multiboot ROM
(MB2GBA) Multiboot game converted to GBA format
-e E-Reader ROM
+ ## NES Unlicensed multicart with ## NES games
NDS Nintendo DS slot-2 cartridge dump
GoodBook E-Book using GoodBook converter
TextReader E-Book using TextReader converter
PictureBoy E-Book using PictureBoy converter
ReadBoy E-Book using ReadBoy converter

GoodGBx codes:

Code Meaning of code
[C] Game Boy Color version
[S] Super Game Boy version
[BF] Bung fix (ROM fixed to work on a Bung cartridge)
(Bung) ROM from a Bung cartridge
NES Conversion NES ROM converted to Game Boy Color ROM
GBS Player Game Boy music ROM

GoodGen codes:

Code Meaning of code
(1) Japan & Korea (GoodGen v0.999.7 only)
(4) USA & Brazil (GoodGen v0.999.7 only)
(5) NTSC (GoodGen 0.999.7 only)
(8) PAL (GoodGen 0.999.7 only)
(F) World (GoodGen v0.999.7 only)
(B) Non-USA (GoodGen v0.999.7 only)
[c] Known bad checksum but good dump
[x] Thought to have bad checksum
(J-Cart) The original cartridge has two controller ports on it
(SN) Sega-Net game
(REVXB) Sonic the Hedgehog Japanese version 2
(REVSC02) Sonic Compilation version of Sonic 2
(MP) MegaPlay version
(MD Bundle) The ROM comes from Sega Mega Drive/Genesis pack-in game
(Alt Music) Alternative music version of Sonic Spinball

GoodNES codes:

Code Meaning of code
(PC10) PlayChoice-10 version
(VS) Versus version
[hFFE] Copied from Far East Copiers
[hMxx] Hacked to run on mapper xx
SMB# Unspecified Super Mario Bros. hack
(Aladdin) Runs with an Aladdin cartridge that locks out 10NES lockout chip
(Sachen) Unlicensed game by Sachen
(KC) Konami classic
(PRG0) Program revision 0
(PRG1) Program revision 1
[U] Universal NES image file format
(Mapper ##) Mapper number
(FDS Hack) Hacked from the Family Computer Disk System to NES
(GBA E-reader) Hacked from the e-Reader card
(E-GC) NES ROM ripped from European GameCube
(J-GC) NES ROM ripped from Japanese GameCube

GoodSNES codes:

Code Meaning of code
(BS) Broadcast Satellite (Satellaview) ROM
(ST) Sufami Turbo ROM
(NP) Nintendo Power ROM

GoodN64 codes:

Code Meaning of code
(Debug Version)
(GC) Nintendo GameCube rip
(Save) Changes the save routine. Instead of EEPROM16 the patched save is SRAM.[10]

See also[edit]


  1. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab GoodTools Suite page
  2. ^ [1] GoodCoCo page
  3. ^ [2] GoodGen page
  4. ^ Cowering (20 September 2012). "New GoodGG (really!)". AllGoodThings. Retrieved 30 September 2012. 
  5. ^ [3] GoodN64 page
  6. ^ [4] GoodPSID page
  7. ^ Cowering (20 September 2012). "New GoodSMS". AllGoodThings. Retrieved 30 September 2012. 
  8. ^ [5] GoodSPC page
  9. ^ [6] GoodSV page
  10. ^ [7] ASSEMblergames

External links[edit]