Although version 2.0i remains available for download for registered users to maintain existing installations, please note that the current version is now 2.4.
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1G1R stands for "One Game, One ROM". Historically, ROM collections for systems like the Neo Geo CD contained multiple versions of the same title—Japanese, North American, and European editions, as well as various software revisions (v1.0, v1.1, etc.).
1G1R refers to a single-game, single-region dump revision used in homebrew/archival communities to identify a precise ROM image. For Neo Geo CD by SNK, a “1G1R redump” note means a newly verified dump of one game, one region, matching Redump/No-Intro standards.
1G1R Philosophy: Instead of keeping multiple regional copies (Japan, US, World) of the same game, a 1G1R set selects only the "best" version based on user-defined priorities (e.g., English language first, then Japanese). Redump Accuracy 1g1r redump snk neo geo cd new
Tools like Retool or PyRoms can take the Redump DAT file and a full "dump pile" and filter it to 1G1R. The script rules for "new" sets are:
In the early days of ROM collecting, sets were chaotic. You would find a single game like Metal Slug duplicated dozens of times (USA, Japan, Europe, Proto, Rev A, Rev B, Hack). 1G1R is a organizational philosophy. It means: One Game, One ROM. 1G1R stands for "One Game, One ROM"
Before we dive into the SNK library, let’s break down the keyword.
represents the most efficient way to maintain a complete collection. Using the Redump standard ensures each game is a verified, bit-perfect copy of the original retail disc. Core Concepts of the 1G1R Redump Set Old way: 60 BIN/CUE pairs (chaotic)
(Japanese, American, European, and a Beta), a 1G1R set uses complex filtering to present you with just one. If you prefer English, it picks the USA version; if that doesn't exist, it might grab the World or European release. The Standard: Redump
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