There is a new way to reuse questions which are already in some existing game.
First hit Create a new game on the dashboard or pick a game you want to create under Templates.
Next in Tasks step choose filter “Games”. Now you can pick a game from which you want to use tasks in the current game you are building.
Add the questions you need and proceed to create the game.
This filtering works also when editing templates or games and creating games based on templates. Basically you can filter tasks by game anywhere you have a Tasks list for adding and removing questions from the game.
PRO tip: Keep in mind, if you want to change questions but keep existing locations in the game use unlock feature.