Everyone's suggestions of works that use gunpowder in interesting ways (thank you!) reminded me of David Weber's "Safehold" series[0]. It's not really fantasy,

Everyone's suggestions of works that use gunpowder in interesting ways (thank you!) reminded me of David Weber's "Safehold" series[0]. It's not really fantasy, though it does hold to a few tropes, but it explores what happens when you speed-run the introduction of gunpowder (and other technological advancements) in a world that has severe technological restrictions placed upon it. I really enjoyed it, but I'm someone who enjoys reading in depth about how improvements in cannons changes the shape of naval battles (for example). [0] https://www.goodreads.com/series/58713-safehold https://www.goodreads.com/series/58713-safehold