It's just keeps getting better.
Google added two fantastic new features to Google Slides. First, Google Slides now has a Q&A feature that lets your audience submit questions to you. Second, Google Slides now has a built-in laser pointer that you can use to call attention to parts of your slides.
It's simple to use. Choose more options from the toolbar at the bottom of the presentation window:
Select slides to present from a list.
Open Presenter view.
Turn on laser pointer.