When the original game, The Last of Us debuted on the PS3 back in 2013, no one was ready for it. Naughty Dog had initially established itself as a developer of fun cartoony action games like Crash Bandicoot, or Jax & Daxter. Then they moved onto swashbuckling, action games like the Uncharted series. All of these became hits and established Naughty Dog as the go-to studio for fun escapism.
Then The Last of Us came out.