Gutenberg's Sub 1.0

Must replace one letter each move.

Form new words by substituting one (and only one) letter already on the board; you may add additional letters. 9 word lists. Save, load, print games. No opponent, human opponent, computer opponent. Suggestions and search functions. Many options.

Form words crossword-fashion. Create new words by substituting one (and only one) letter already on the board; you may add additional letters. 9 word lists, including Middle English, Shakespeare, General, American, British and Contractions. Save, load and print games. No opponent, human opponent, and computer opponent (4 levels). Suggestions and search functions. The tiles come in 4 sizes, 3 styles and 10 colors. Many options.