Diretide is the seasonal Halloween mode for Dota 2, first run by Valve in 2012 and revived in 2020 after years of player requests. The 2020 return added new chat wheel sounds, including this nightmare noises clip that players could unlock and spam in matches. Chat wheel lines became a core part of Dota culture because they play to everyone nearby, so short creepy sounds spread quickly through games, streams and clips. It is still used outside Dota as a generic horror sting for trolling and spooky edits.