(List of Linked Hashes
Ys: Book I & II (CD) (PC Engine)Hashes are used to confirm if two copies of a file are identical. We use it to ensure the player is using the same ROM as the achievement developer, or a compatible one.
Currently this game has 1 unique ROM(s) registered for it with the following MD5s:e9f07a66e2e793bdbf8538ac110bfb7c