noun
has-been; past its prime; obsolete
Internet slang abbreviation of 終わったコンテンツ. Used for things (games, trends, celebrities, etc.) that are no longer popular or relevant. Often carries a dismissive or mocking tone.
あのゲームはもうオワコンだよ。
That game is already a has-been.
オワコン扱いされるのが嫌で、必死に新しい企画を
Not wanting to be treated as obsolete, he's desperately thinking up new projects.
The full phrase from which オワコン is abbreviated. More literal and less slangy.
A standard term for 'outdated' or 'behind the times', without the dismissive internet slang nuance of オワコン.
Abbreviation of 終わったコンテンツ (owatta kontentsu, 'finished content'). Originated in Japanese internet communities as a dismissive label for things that have lost their popularity or relevance.