3.: Planescape Torment
Speaking of Obsidian and personal stories, how about Planescape Torment, the game many player regard as the best game of all times? Or at least the best written game of all times? Set in the Advanced Dungeons & Dragons setting of Planescape, one of the most arcane and positively aethereal settings of pen and paper RPGs this side of Glorantha, Planescape Torment allowed for a freedom in playing out the story and characters that had been completely unprecedented when it arrived in the late 1990s.
Sadly, Planescape Torment was not a very successful game, financially and became a cult hit only after Black Isle Studios had been shut down already.