By my count, we've had at least 5 "answer-dependent" challenges now, starting with Evolution of "Hello, World!". I think it's time we started tagging these, so we can put some general information in the tag wiki, and it's immediately apparent that a challenge is of this type.
So, here's another Good Ol' Meta Poll™.
When voting, keep in mind, that in general, answers won't necessarily just depend on the answer, but potentially on some or all or the existing answers (we didn't really have that yet, but we might not want to preclude the tag from including those).
Please cast your vote under the premise that answer-dependent challenges are on-topic for PPCG. If you disagree, the place to discuss that is this question.