This isn't a question about what to use for a game, it's your homework question:
What are the disadvantages and advantages of a 'Windows Form' and a 'User Control'?
And we do not do your homework: it is set for a reason. It is there so that you think about what you have been told, and try to understand it. It is also there so that your tutor can identify areas where you are weak, and focus more attention on remedial action.
Try it yourself, you may find it is not as difficult as you think!