They both are forms of figurative language used for comparison, but metaphors and similies do differ greatly. Similies are a comparison using the word like or as. Metaphors are a comparison without like or as, and more distinct. So the difference is Similies always contain the word like or as in their comparison, while metaphor doesn't have to.
I think it is agree, because it underlined the verb playing and the subject which is the people playing
The definition of compulsory is required by law or a rule; obligatory.
