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Name the common thread
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How to play
Find the hidden rule by identifying the thread that connects each IN example.
Test values to find more clues — values in the rule appear green, values not in the rule appear blue.
Each OUT result and each wrong guess reveals a new example clue, up to four on each side.
You have unlimited tests but only three guesses to name the rule.
Spend a guess early to reveal a hint, or a hint appears automatically after two wrong guesses.
Example
In the rule
PIANO
PENGUIN
Not in the rule
CAT
WINDOW
IN
PIZZA
OUT
TABLE
Words starting with P
Correct!
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