Effectiveness of Royal road ads for non lit rpg authors

#1
Has anybody tried Royal Road Ads for authors? Is it effective for non-lit rpg stories? My story is a YA progression fantasy centers on the Treeman Race. I wonder if my fiction will just get 0,5 review bombed if I advertise a non litrpg story... 

Book 1 will be over soon in about 10 chapters, and that's when I hope to advertise it on Royal Road.