The basic elements of the Crossword: - There are crosswords with 10 and 15 clues (95 crosswords in total). - You can use hint button (blue with question mark) if you don't know an answer - You can check if there are wrong values (green with check mark) - You can reset a crossword with X button - When you complete a crossword puzzle, then you unlock the next one - You have the ability to solve again the completed crosswords- No internet required