Baldur's Gate 3 is built on the Dungeons & Dragons Fifth Edition system, adapted for CRPG by Belgium-based developers Larian Studios. As with any tabletop-to-video game adaption, Larian has had to add, remove, and tweak the Fifth Edition rules to fit Baldur's Gate 3.
Baldur's Gate 3: Biggest Rules Changes From Dungeons and Dragons Fifth Edition
Baldur's Gate 3 is based on the Dungeons & Dragons Fifth Edition tabletop RPG, but many of the system's rules have been tweaked to better suit a CRPG.
