The Letter-Writing System in Gamecube Animal Crossing

I’m opening this post with a special message to any anthropomorphic animal video game characters who happen to be reading this. As we will see, they rate this special prologue quite highly, and so it will make us very popular to any Dottys or Apollos in our audience, being exactly the sort of thing they want to hear. In the secret, inner language of their minds, I’m sure it confirms all their biases and makes them feel good about themselves:

I.I.I.I.I.I.I.I.I .I.I.I I.I.I.I.I.I.I .I.I.I.I.I.I.I.I.I.I.I .I.I.I.I.I.I I.I.I.I.I.I.I.I.I .I.I.I .I.I.I.I.I.I.I .I.I.I.I.I.I.I.I.I.I.I .I.I.I.I.I.I .I.I.I.I.I.I.I.I.I .I.I.I .I.I.I.I.I.I.I .I.I.I.I.I.I.I.I.I.I.I .I.I.I.I.I.I.

Nintendo’s Animal Crossing series has a lot of weird systems in them. Some games wear the grass down according to character walking patterns; all the games have the “Stalk Market,” a risky way to make a lot of money; most of the games have a lost-and-found; and so on.

A system that was in the first game, and I’m not sure was ever adapted for later games (but then it might have been) was letter-writing, not just to other players in the same village, but to the villagers. They’d save the letters you wrote them and show them off to other players if they moved to another town, and even write you back. Of course, parsing and intelligently responding to any text, no matter the language, was beyond computers of the time (and despite what AI enthusiasts will tell you, still isn’t), so the game has to fake it in some way. But, how?

Well, what is the purpose of writing letters to characters in the game? It gives villagers something interesting to show people when they move to their villages, and, it’s a roleplaying exercise for the writer, a way to pretend the animal denizens of your town are real people and not simulated game mechanics present to make the game seem less empty.

Both of these design goals work best if the person writing the letter actually writes real letters, and not random jumbles of characters, so Animal Crossing has a mechanism to reward players for writing what appear to be real letters, and not placeholder gibberish, and its system of ranking text to attempt to reward actual letter-like writing is quite complex. It looks for punctuation that looks generally appropriate, capital letters after sentence-ending punctuation, triples of characters that commonly appear in English, and sequences of characters followed by spaces that approximate the word lengths of English. Of special interest: these are elements that have to be tweaked by language, and so they pose a special challenge to localization.

Hunter R., popular Animal Crossing Youtuber, released a video that explains exactly how GC Animal Crossing scores letters written to villagers. As it turns out, the text that scores the very best looks a lot like that in the preamble to this post, up above. Go figure! Here is his description (10 minutes):

How Villagers “Read” Your Letters In Animal Crossing (Youtube, 10m)

EDIT: My mistake! Originally the villager-friendly message near the beginning of this post was missing a trailing period, which would cost it some points when brought under the exacting animal eye. It has been corrected.