But expecting an "evil path" to the main story, including some sort of evil ending, in a game that is set in the Forgotten Realms setting, is highly unrealistic. To put it bluntly, evil is just not going to end up "winning" in a Forgotten Realms game.
I'm sorry, but.. what? Many games set in Forgotten Realms have evil endings, including the original BG duo/trilogy! You could become a literal God of Murder, doesn't get more evil than that, in my book
No, that is NOT an example of an evil ending for a game. Evil-aligned gods have always existed in FR lore. You PC becoming one of those gods is not an example of an evil ending. In BG2, even if your PC becomes Bhaal, nothing changes in the Forgotten Realms, or in the Sword Coast, or in the city of Baldur's Gate, or in the lives of any people. An evil outcome would the area of the game descending into evil, with the lives of ordinary average people being plagued with evil things as the result of the end of the story. Perhaps something along the lines of your evil PC remaining mortal and taking control of Baldur's Gate and the surrounding areas and imposing your evil rule, thereby devastating the city, the area, and its people and turning their lives into abject misery. Such an ending to ToB would've been completely contradictory to FR lore, and that's why WotC would not have been willing to sanction it even as just a player option, one among multiple ending outcomes, for BG2. So to repeat, you as the player could be evil and play the game all through as an evil character right up to the end of the game. But the overall main story "path" and ending are decidedly good.
