singular is better. you don't say someone has geeks cred or streets cred; you say gek cred and street cred. you should say zombie cred, as well. and claim tags are the same pool of things that creds are, so they should match. besides, it is a pirate-related or ninja-related claim, and falls into the pirate category or ninja category.
there are times when the question isn't singular versus plural, adn there are times when the singular has different implications that the plural, usually when the singular could be stuff and you need to disambiguate to the things (such as rubber vs rubbers), or when the singular is not much in use in the language (e.g. scissor, pant), or when one or the other is the proper name of something else entirely (e.g. windows vs. window).
Discussion (1)
singular is better. you don't say someone has geeks cred or streets cred; you say gek cred and street cred. you should say zombie cred, as well. and claim tags are the same pool of things that creds are, so they should match. besides, it is a pirate-related or ninja-related claim, and falls into the pirate category or ninja category.
there are times when the question isn't singular versus plural, adn there are times when the singular has different implications that the plural, usually when the singular could be stuff and you need to disambiguate to the things (such as rubber vs rubbers), or when the singular is not much in use in the language (e.g. scissor, pant), or when one or the other is the proper name of something else entirely (e.g. windows vs. window).