Here's why:
* Teen Titans (2003-2006): This series ended with a satisfying conclusion in the episode "Things Change," where the team faces off against Trigon and ultimately defeat him.
* Teen Titans Go! (2013 - present): This series is still ongoing and doesn't seem to be wrapping up anytime soon. It's a comedic take on the Teen Titans, with a very different tone than the original series.
* Teen Titans: The Judas Contract: A movie based on the comic book story, this is a standalone film rather than a part of a series.
So, while "Things Change" might be seen as the final episode of the original *Teen Titans* series, it's important to note that the franchise continues with *Teen Titans Go* and various other projects.