Isleward is only fully supported on Chrome/Android at the moment. While iOS does work, there are some issues with it.

How to play:

1. Navigate to https://play.isleward.com/ on your mobile device
2. Add Isleward to your home screen (see footnote)
3. Open Isleward from your home screen

Footnote:

• To add Isleward to your home screen in Chrome: https://www.maketecheasier.com/add-chrome-bookmarks-android-home-screen/
• To add Isleward to your home screen in Safari: https://www.lifewire.com/how-to-add-home-screen-icons-in-safari-for-the-ipad-4103637