Teachers paste a word list into a browser-based editor and watch a crossword, word search, quiz or memory game build itself alongside as they type — clue on the left, playable puzzle on the right, with styling, hint and word-bank settings visible before anything is shared. The same content can be reused across any of 36 activity types, from jigsaws and sudokus to ciphers, mazes and matching games.

Finished activities are shared with a link or a QR code that pupils scan on any device, with no installation and no player accounts required. Registration fields are optional and chosen by the teacher, and results — scores, answers and completions — arrive live as pupils play. Activities can be embedded into a CMS or LMS without headers, footers or branding, and an AI assistant will draft clues, questions or an image from a topic you give it. Multiplayer modes let pupils compete, work in teams or take turns.

Puzzel.org runs on player sessions rather than locked features: a free tier covers two activities and 60 sessions a month, while paid Teacher, Teacher plus and School plans raise the session limit and add tracking, embedding and AI support. The School plan includes shared teacher libraries and Puzzel LMS, which collects activities, text, images and video into one scrolling page per lesson and reports progress per pupil across a course without student accounts. Data can be stored in a US or EU region chosen at sign-up.