Google Slides is a presentation program included as part of the free, web-based Google Docs Editors suite offered by Google. The service also includes Google Docs, Google Sheets, Google Drawings, Google Forms, Google Sites, and Google Keep. It has always been a mystery to many. Google slides have many qualities instead of just a presentation basis.

1. Create an Interactive Table of Contents
2. Internal Linking (Linking to Other Slides)
3. Create Interactive Learning (and Student Table of Contents)
4. Customize the Size of Your Slides
5. Download As…
6. Create an eBook with Google Slides
7. Create Images with a Transparent Background
8. Add a Drop Shadow and Format Image Options
9. Integrate with Google Keep
10. Add-Ons!
11. Pear Deck
12. Icons by Noun Project
13. Unsplash Photos
14. Publish to the Web
15. Link or Embed a Slide Deck
16. Embed a Google Drive Video
17. Customize Video Start & End time
18. Autoplay a Video/Mute Audio
19. Insert Audio (25 Ways to Use Audio in Google Slides Projects)
20. Voice Type Speaker Notes
21. Insert Charts
22. Link Data and Other Files
23. Insert Diagrams
24. Import Slides from Drive or Upload PPT
25. Stop Motion Animation

Source: https://shakeuplearning.com/blog/25-things-you-didnt-know-google-slides-could-do/?epik=dj0yJnU9dTdRbmNUWlRxUDJ1Qkt0bFg5WkREaFhoa3lONE5jNEkmcD0wJm49Q00zanliaHhhd2ZhSHZ2VWdlWVFEUSZ0PUFBQUFBR0NMblZv