This is the collection of the online games. You, as teacher or gamemaster, can create your own puzzle and create a link to your puzzle. Send this link to your students or friends. And they can try to solve your puzzle.
For example, you want to create a crossword puzzle. Go the the section word games; click on the crossword maker. Here you can create your puzzle. Then click on the button Create link to play online. Copy the link and send this by email to your friends or post it on social media.