You can't. The case report after winning a competition cannot participate in another competition after revision. If the similarity is high, the winning works will be held accountable if they participate in other competitions. This is more than one draft, and many competitions will write in the entry requirements that more than one draft is strictly prohibited. As for the specifics, it depends on the attitude of the organizers of the contest. Of course, if it is some influential games, don't take the risk, after all, it may have an impact on your future career.