Is there a game called black?

Excuse me, could you please clarify something for me? I've come across a mention of a game called "black," and I'm wondering if it's a legitimate game or perhaps a misunderstanding. Is there indeed a game that goes by this name, or is it perhaps a reference to something else entirely? If it is a game, could you tell me a bit about it? Is it popular, and what are its main features? I'm quite curious to learn more.