I really want to transfer to USC to pursue game developing and I'm not sure how to start

I’ve seen the applications and they ask to showcase a portfolio. I’m a cc student wanting to transfer to pursue game developing, any tips on how to start a portfolio?

Are you interested in game design or more game programming? If the latter, start by downloading one of the easier game engines like GameMaker or Unity. Google game design docs and create your overall idea. Don’t just start programming until you have your roadmap started. Also some game portfolios are on YouTube or linked onto Wordpress blogs. You should be able to find examples.

Thank you for the advice! Also, do you know if game developing requires knowledge in higher level maths such as calculus?