Something that might be relatable: show a few screenshots of Angry Birds, and talk about the different roles that went in to making it, such as UI programmers,

Something that might be relatable: show a few screenshots of Angry Birds, and talk about the different roles that went in to making it, such as UI programmers, physics programmers, project managers, designers, etc. That also gives you a great starting point for showing how "a programmer with a physics background" can build anything from games to spaceship software. You could also use Angry Birds as an example of entrepreneurship, both in the sense of "what would a minimum viable Angry Birds be?" and how it took several less popular game launches to get to that point.