Any genre of “novel” is okay for NaNoWriMo. We just want you to be excited about writing.
If what you’re writing doesn’t qualify as a lengthy work of fiction, we’ve set up a group for NaNo Rebels in the forums.
On Camp NaNoWriMo
Camp NaNoWriMo is specifically designed for open-ended writing, including scripts, poems, and more! You can specify the category of your work on your Project Info page.