GoodTools

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The GoodSet (as they are commonly collectively referred to as) or GoodXXXX series is a naming method and series of programs created by Cowering used to label and verify ROMs.

Country Codes

• (U) - The game is from the US and is in English
• (J) - The game is from Japan and is in Japanese
• (E) - The game is from Europe and is in English
• (JU) - The game is in English and Japanese
• (UE) - The game is in English and the US release is identical to the European one
• (JUE) - The game is the same for Japan, the US and Europe
• (W) - The game has a world release
• (A) - The game is from Australian
• (C) - The game is from China
• (D) - The game is in Dutch
• (F) - The game is from France
• (FC) - The game is in French Canadian
• (FN) - The game is from Finland
• (G) - The game is from Germany
• (GR) - The game is from Greece
• (HK) - The game is from Hong Kong
• (I) - The game is from Italy
• (J) - The game is from Japan
• (K) - The game is from Korea
• (NL) - The game is from the Netherlands
• (S) - The game is from Spain
• (Sw) - The game is from Sweden
• (UK) - The game is from the United Kingdom
• (Unk) - The game is from an Unknown Country
• (-) - Alternative label for Unknown Country
• (PD) - The game is in public domain
• (Unl) - The game is unlicensed

Standard Codes

• [!] - The game is a verified good dump
• [aX] - The game is an alternative re-release to the original copy
• [bX] - The game is a bad dump. These are useless. 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.
• [fX] - A fixed game has been altered in some way so that it will run better on a copier or emulator.
• [hX] - The game has been hacked
• [h1C] - Further identifies a hack as a cartname hack
• [oX] - 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.
• [pX] - A pirated version of a ROM Image. Usually the copyright messages and company names are corrupted/removed.
• [tX] - The game has been supplied with a trainer
• [T+XXX] - Most recent version of a ROM translation
• [T-XXX] - Obsolete version of a ROM translation
• [x] - Wrong checksum (Needs verifying). Potentially- [c][!] or a bad dump

Genesis-Specific Codes

• (1) - Carts with this code will run on both Japanese and Korean machines.
• (32X) - 32X game
• (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.
• (5) - The game will only run on NTSC systems
• (8) - The game will only run on PAL systems
• (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.
• (J-Cart) - Codemasters J-Cart
• (MP) - MegaPlay (only Sonic 1 is in GoodGen)
• (REVSC02) - Revision ripped from Sonic Compilation (Only Sonic 2 is in GoodGen)