NBA official image
You can watch NBA games for free via the NBA app and using TNT OT tab and NBA CrunchTime tab. This isn't the traditional way to view the games but with the partnerships of TNT and CrunchTime, this is the best way to watch NBA basketball legally and for free! You will need a smartphone, tablet or Smart TV or even a media device that supports the official NBA app. Also you must have a stable internet connection or wifi or cellular data connectivity to stream the games. All games will be and are aired live. Check out the video below to see how the NBA app looks and works. Once again, the NBA app is 100% free to download on most devices. The best way to try the app out is with Google Play Store and Apple app iOS store. Let me know how well you like using the app and were you able to view the games via TNT and CrunchTime for free.