Moodle Crossword question type plugin will help teacher or course administrator to create crossword puzzle question for quizzes.
You can install this plugin from Moodle plugins directory or can download from Github.
After installing the plugin, create quiz and add a question type crossword
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.