Fill-In Crossword Puzzle

This is the most Classical Word Game and the most popular word game of all time ever.
There are some dozen given words and your task is to fill all of them to the board (or grid).
This game has 5 degree levels from easiest to hardest thats equivalent TRIVIA, EASY, MEDIUM, HARD AND EXPERT.
The Rules to play is quite easy: highlight a sequence of cells then choose a word you think it will fit most.
Use Hints if you have some trouble !
Hope you will enjoy this game and feel free to give your feedback here and rate it 5 stars.
Thank You so much.