For a completely serious answer, when the threads start looking like a general. IE nobody is discussing the game, it's just shitposting and art dumping and off-topic chatter, and a new thread is made before the old one is even archived.
And deltarune threads have already surpassed this. There's no new content to discuss, nothing new to be talked about; every thread is just shitposting and spam and avatarfagging. Now go back.
