For this game, the specific rules can vary to your classroom's needs, but the premise is simple.
There should be two dice (either for the whole class or groups), one that represents the subject and the other that represents a verb (listed on the sheet). The students then need to conjugate that verb for that subject into the passé composé. After doing nine practices, students need to conjugate the verb in the negative.
My recommendation is to give students less than one minute per conjugation in order to maintain a quick pace.