Even if you do not like traditional crossword puzzles, you will love these. Designed to help anyone learning Korean, or Korean speakers learning English, these puzzles are absolutely addictive. They are formatted in such a way that each puzzle can be solved in 15 to 30 minutes, while exposing you new vocabulary in each puzzle. The folks at Webster's Online Dictionary helped make the vocabulary gradually harder across puzzles thus increasing the challenge as you progress. These are truly pleasant crossword puzzles for language learning, and well worth the price.