And would you use imperative here?

To me the 'vai' helps indicate the sequence in which the actions should be done.

If you only wanted to use the verb "jogar" (in a lesson not designed to practice using the simple future), you would also have to conjugate "jogar" to the second person singular informal form (the 'tu form') of the imperative: "sai e joga!"

The sentence uses the 'tu' form for both "sai" (from "sair") and "vai" (from "ir"). At first it is a little confusing, that the 'tu form' of the imperative is written the same as the third person singular present. http://www.conjuga-me.net/verbo-ir