Click any letter in the same column as the arrow to dig that letter. Once the arrow is at the its very last position, you should have a five-letter word spelled out. If not, it rejects the word and you have to find another word to dig out. Your goal is to dig out the whole entire grid. You can press the backspace button on the left side of the screen to undo your last move. Press the reset button on the right to reset the puzzle. The puzzles are procedurally generated but entirely possible.
All art, code and idea by me.