Here are the list of some the apps that support "Try Now" feature:
3. NYTimes - Crossword and many more.....
To get started building an instant app, download Android Studio 3.0 and install the Instant Apps Development SDK.
Steps to Get Started with Android Instant Apps
Install the Instant Apps SDK and then set up your development environment and test device
Follow the guide to create your first instant app.
You can also learn about refactoring a simple Android Studio project to become an instant app by completing the Instant Apps Codelab
Before restructuring your app as an instant app, you must decide on how you want to structure your app and then plan your restructuring efforts. This process differs for each app, depending on the complexity and design of your app. For more information about restructuring your Android Studio project to build an instant app, see Project structure.