E
I think you have to contact the admins at the instance there you created the community. They should have the power to delete a community. If you're on Matrix or Discord, the lemmy.world admins are often active in the lemmy.world spaces and you should be able to get a prompt response.
In my opinion the community is intended for real-world maps. Communities like [email protected] and [email protected] might be a better fit for fantasy maps.
Though I don't mean to be a heavy-handed dictator. If you have something to share that you think the community might like, go ahead and post it. We'll see what people think via the comments and votes. If people here want to see fantasy maps then that's fine with me.
A