A few people have asked or expressed interest in making third party content for Brighthammer. Which is awesome! I'm stoked that people like my game enough to want to make their own stuff for it.
You can absolutely make and sell content for Brighthammer, provided you include the following text somewhere:
"Based on Brighthammer by HyveMynd. [INSERT NAME HERE] is an independent work compatible with Brighthammer but not affiliated with HyveMynd."
You can also use this logo if you'd like:
What you absolutely cannot do is make content for Brighthammer that promotes racism, fascism, sexism, homophobia, transphobia, etc. Not even Brighthammer villains are those thing.