what part do you like, the power play, monster top, game-like bl?
It's gonna be hard to find one that's exactly like it but there are others with similarities.
Here's what I got: (like I said, no exact matches)
https://www.mangago.zone/read-manga/regas/ scary/cute top, fantasy, vaguely medieval
https://www.mangago.zone/read-manga/moonlight_kie/ scary/obsessive top, fantasy, vaguely Edwardian
https://www.mangago.zone/read-manga/the_affairs_of_the_other_world_depend_on_the_corporate_slave/ game-like BL
https://www.mangago.zone/read-manga/life_going_wild_with_plug_ins/ Chinese fantasy game-like BL
https://www.mangago.zone/read-manga/stigmata_1/ obsessive top, political intriuge, vaguely medieval
https://www.mangago.zone/read-manga/profundis/ obsessive top, guideverse
https://www.mangago.zone/read-manga/turning/ omegaverse, vaguely edwardian
https://www.mangago.zone/read-manga/kocchi_muite_glare/ power play
https://www.mangago.zone/read-manga/buddhist_priest_a_spider/ non-human top
https://www.mangago.zone/read-manga/shouwaru_boukun_kishu_to_nagasare_senba/ non-human bottom (he's a horse lol), isekai
https://www.mangago.zone/read-manga/how_to_be_the_chosen_one/ BL isekai, fantasy, obsessive top, harem/polyamory, horny
https://www.mangago.zone/read-manga/knight_of_the_red_curse/ horny fantasy, vaguely medieval
https://www.mangago.zone/read-manga/warrior_s_afterlife/ horny fantasy, vaguely medieval
https://www.mangago.zone/read-manga/dark_fall/ dead dove: do not eat, very messed up and dark, fantasy
almost forgot
https://www.mangago.zone/read-manga/heaven_official_s_blessing/ cultivation/deities fantasy BL * this one is probably gonna be one of the closest
https://www.mangago.zone/read-manga/mo_dao_zu_shi_novel/ cultivation/martial arts fantasy BL
Omg thank you so much for the long list of recommendations
Enjoy!
Can anyone recommend me other bls like this?