Prerequisites: In the unlikely event that this format is hidden, please contact the customer support team to enable it for you.
Tiles format allows you to place an image over any activity to give a tiled interface for the end user.

You can use topic sections on the course page to manage the layout. For example, you could have a section dedicated to the mandatory activities on the course page and another where you place all the optional resources.
The format is mobile responsive. The tiles adjust themselves to different screen sizes and orientations. It works with iOS and Android.
Note: The ideal size for the image is 340px x 200px.