The feeling you get after reading all three books of the series; The Hunger Games. You're sad that it's over and you're sad how it ended even though you know there wasn't really any other way to end it. You wish that you didn't read all three books in less than a week because now you have nothing left to do in life except think about it, watch the movie, wait for the next movie, and then fantasize about the amazing universe than Suzanne Collins created. A common therapy for this depression is to youtube different interviews of the cast from the movie; realizing that it's not real no matter how much you may or may not want it to be; and then you eventually become obsessed with Jennifer Lawrence, Josh Hutcherson, and maybe even Liam Hemsworth, depending on your gender.
I just finished reading all three books to The Hunger Games, and I can't stop thinking about it, I may have some Post Hunger Games Depression.