I've used it a bit to help with creativity. For example, I wanted to brainstorm some unit designs and gameplay mechanics for a RTS game I wanted to build. I prompted GPT-3 with an interview with a game designer where unit designs and mechanics were discussed. For a prompt I used a few questions and answers and then a single question I wanted GPT-3 to answer for me. After a few attempts with slight variations it spat out a bunch of ideas for me. While few of the designs were fully worked out and immediately usable, a couple of suggestions by GPT-3 were able to spark enough creativity to create some cool things.
My favorite reply was:
"A: I think the best example of this is the ability to swap positions with a friendly unit. This ability can be used in so many different ways. You can use it to support an ally, or you can use it to escape a tricky situation. You can use it to surprise an enemy by swapping with a unit they didn't expect, or you can use it to put yourself in a better tactical position. It's a simple idea, but it actually turns the whole game on its head."
My favorite reply was:
"A: I think the best example of this is the ability to swap positions with a friendly unit. This ability can be used in so many different ways. You can use it to support an ally, or you can use it to escape a tricky situation. You can use it to surprise an enemy by swapping with a unit they didn't expect, or you can use it to put yourself in a better tactical position. It's a simple idea, but it actually turns the whole game on its head."