This Q+A with Celia Hodent, former Fortnite UX Lead, is quite enlightening when considering game design, engagement, and addiction as it relates to massively successful games like Fortnite.

My latest GDC talk was about ethics in the video game industry, and I talked about addiction. These are the things we don’t think about when we make a game because—you’re so lucky when a game is working and it’s making money, and it’s not canceled, and your studio isn’t shutting down. So we don’t necessarily think about the other side of it.

And to be fair, most games don’t have that high-engagement problem. It’s only when it’s super successful that you can afford to consider “oh, maybe we need to think about this game a bit differently.”