LogFAQs > #979601971

So, usual disclaimers first. Game is given as a Humble gift link which gives a Steam key; you need a Steam account but you don't need a Humble account. The game is a mystery until someone wins. If you already have it (or don't want it) you can do whatever you like with it.

For this one, we're going to play a (sort of) game of Zendo.

The game revolves around whether words fit a set of secret rules that I've come up with. Ultimately, the goal is to figure out what these rules are. In order to do so, you may nominate words and I will reveal whether or not they fit the rules.

Each round, you may either nominate up to three words, or make one guess at the rules. Exception; no guesses at the rules can be made during the first round. The round ends when I make a post answering the status of nominated words / guesses at the rules, and then the new round begins right away. (If anyone posts while I'm writing up said post, I'll edit it to include the affected post.)

You do not have to guess the exact wording of the rules, as long as your guess is functionally equivalent. (For example, if I had two rules "the word must start and end with the same letter" and "the word must end with a vowel", it would be acceptable if someone's guess was "the word must start and end with a vowel".) If a guess is incorrect, I will give a counterexample word - this may either be a word that fits the guessed rules but doesn't fit the actual rules; or a word that fits the actual rules but doesn't fit the guessed rules.

Also, to be clear, there is no requirement that the "words" you nominate be actual English words. They can be nonsense strings of letters if you like. Letters only, though.

There's also no rule against cooperating to try and figure it out if you like, but ultimately the prize goes to the first person to post the correct guess at the rules.

To start you off with, here are some words that do and don't fit:

Fit
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CALIFORNIA
FREEZING
POOPIE
ROTATION

Don't fit
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BATTLE
CHEESE
GAMEFAQS
URANUS