The online game Club Penguin was "killed" or shut down when its servers officially closed on March 29-30, 2017. This was announced in January 2017, and the closure marked the end of the original game, which had been popular since its launch in 2005. The shutdown was due to Disney shifting focus to a successor mobile game, Club Penguin Island. The phrase "where were you when Club Penguin died" became a popular internet meme and copypasta reflecting the emotional and nostalgic impact of the game's closure for many of its players.
In the copypasta meme, people often humorously say they were "at home eating Doritos" when they heard the news of Club Penguin shutting down, highlighting how the closure was a memorable moment for the community.
So, Club Penguin was "killed" in March 2017 as the servers shut down, ending the original Disney-owned virtual world for kids and fans.