Crossword.
Crossword is a puzzle game, and as the title suggests, you will try to fill up a crossword puzzle. There's a little twist though, you don't have any clues to go on. All you get are some letters that are already on the board, and some letters you can use to fill the board. Each time you tap a tile to use a letter, all other tiles using that letter will automatically be filled as well. Sounds easy enough, right? Well, you can go through all five levels of difficulty to keep the game interesting, so you can enjoy all those brain teasing crossword puzzles.