[no_wizard]

The official toolkit for modding Baldur’s Gate 3 is extremely extensive. You can make an entirely different game on top of the game if you wanted

[paavohtl]

Really? Officially they don't even support modifying or creating new levels: https://baldursgate3.game/news/community-update-27-official-.... You are mostly limited to visual changes, UI mods and balance / tuning changes.

[392]

That seems an easy fix until one gets nervous about working a month just to release a single -purchase game engine. That's a journey that you can take but you might at least consider a license.