Unolingo Series 2 is the next release of our original and popular word puzzle featuring 160 additional puzzles. If you like crosswords, Sudoku, or word games like Scrabble, then you'll love Unolingo, a fun new word puzzle optimized for the Kindle Fire by Amazon. Every Unolingo puzzle is a 10 x 10 crossword without clues and 26 empty squares that require the precise placement of each letter in the alphabet. Select from your choice of four difficulty levels and use your word knowledge, reasoning, and deduction skills to complete the puzzle. This fascinating word puzzle can generally be completed in 5-15 minutes and is fun for the daily commuter, the casual puzzler, or the serious word buff.