This question should not be allowed, and it should not be reopened. It does not contain an artifact that directly depicts or comes from an actual video game, so it does not meet our criteria for allowing "identify this game" posts.

Regarding the other example questions, they roughly fall into three different categories that should be handled differently.

• This question, this one, this one, and this one all contain images or audio that are directly and officially associated with their corresponding games, and that the asker reasonably believed were from games. They conform to our ITG policy, so they should all be allowed.
• This question, this one, and this one all contain images that are clearly not directly from the video games the asker is looking for, so strictly speaking they should be closed. However, the characters in those images are depicted in a way that is so closely similar to the actual assets within the game that it is very nearly functionally equivalent to providing an artifact from the game itself, so it is reasonable to keep them around. But they are right on the border line of acceptable questions.
• This question, this one, and the one this meta question is primarily addressing all depict art that is so significantly stylistically different from the games the askers are trying to identify that some guesswork is needed to actually make that association. This guesswork is one of the primary reasons general "identify this game" questions were banned in the first place, so all of those questions should be closed.

This question should not be allowed, and it should not be reopened. The issue here is not whether there is proof that the effect originally came from a game, or whether a relevant artifact exists. We only allow "identify this game" questions in which the original asker provides an artifact that directly depicts a game or a game asset. In the post in question, the artifact provided by the asker is from a TV show, not a game, so it does not meet our criteria. This conclusion does not change if a new artifact is provided in an answer or an edit by another user.

Regarding the other example questions, they roughly fall into three different categories that should be handled differently.

• This question, this one, this one, and this one all contain images or audio that are directly and officially associated with their corresponding games, and that the asker reasonably believed were from games. They conform to our ITG policy, so they should all be allowed.
• This question, this one, and this one all contain images that are clearly not directly from the video games the asker is looking for, so strictly speaking they should be closed. However, the characters in those images are depicted in a way that is so closely similar to the actual assets within the game that it is very nearly functionally equivalent to providing an artifact from the game itself, so it is reasonable to keep them around. But they are right on the border line of acceptable questions.
• This question, this one, and the one this meta question is primarily addressing all depict art that is not from a game and is so stylistically different from the games the askers are trying to identify that some guesswork is needed to actually make that association. This guesswork is one of the primary reasons general "identify this game" questions were banned in the first place, so all of those questions should be closed.