You can make copies of a draft to take it in different directions. For example, you might duplicate a platformer template and make two platformers with different themes. Or, if you’re about to make a big change to a project, you can duplicate it so you have a backup to return to, just in case something doesn’t go as planned.
To make a copy of a draft, tap the ... button in the bottom right corner of the draft thumbnail. Then tap "Duplicate".