An initial word is displayed on the game field and you and your computer opponent take turns trying to create new words. You can use the existing letters on the game field and add a new letter each turn. The word should be created from the horizontally or vertically adjacent letters on the game field. An added letter must be present in your word, and you cannot use a letter twice.
The game is over when the entire game field is filled with letters. The winner is the one who used more letters in the composed words.
Noodle features three levels of difficulty for your computer opponent, and the ability to add and edit words in the computer's dictionary, the ability to print out the layout and play the game on paper, statistics, top 10 scores, game time limits, sound effects, and more.