My point was saying that the term antique, vintage, or retro could all theoretically describe the same game depending on who you ask, where you are, what game you are talking about, etc. For example, some people may consider Atari 2600 and Colecovision games as antique, where others may call them vintage. An NES game like Duck Hunt may be called classic and vintage, and even antique depending on who you ask. A particularly young person might call it antique, but an older person may not even consider it "that old."

Your initial post seemed to complain that the use of the term "retro" in the context of the post is somehow "wrong," but there isn't really a "wrong" way to use the term. Perhaps I misunderstood what you were saying.