Only thing DOS III about it in my opinion are the surplus of AoEs that leave ground effects for some reason that wouldn't normally leave anything on the ground in D&D 5e (examples: Firebolt, Ray of Frost and Acid Splash). Besides that it's been pretty faithful to D&D and Baldur's Gate's storyline.

Elf Cleric for Hire! I only accept gold or compliments to my healing. Doubting me costs EXTRA.