Warning, this is still work in progress, and not finished yet.
Eventually, we hope this question type will be published at
Or you can install using git. Type this commands in the root of your Moodle install
git clone https://github.com/moodleou/moodle-qtype_crossword.git question/type/crossword
echo /question/type/crossword/ >> .git/info/exclude
Then run the Moodle update process Site administration > Notifications