Codeword Unlimited +

Codeword Unlimited+ is a free word puzzle that decodes numbers into letters, delivering endless Codeword (cipher crossword) challenges. It generates unlimited codewords on the fly with a powerful engine and built‑in word list, and lets you tailor grids from 3x3 up to 20x20 to fit phones and tablets. You can adjust difficulty from 0 (easy) to 9 (very hard) and even enable an early learner mode, making it suitable for learners and experienced puzzlers alike.

Key features include: tapping a square highlights all cells with the same letter, an on‑screen keyboard for easy input, and the option to view word definitions when online. Choose from 26 available dictionaries/languages, switch between portrait and landscape modes, and track high scores with a top-20 list per difficulty. When you’re stuck, two assists can help: reveal another decoded letter and show candidate words based on your current letters, allowing faster progress and learning across languages.