It is a game to learn a language by matching words.

It is a game to find the word within the given number of times by guessing the letter used in the word presented in the blank, inputting it, and looking at the result expressed in color.

There are English words, Korean words, and acronyms for puzzle types.
Korean users can learn words by deducing and solving English words, Korean words, and idioms, and English users can learn Korean words by reasoning and solving them.