MORE PLANESCAPE TORMENT (non-pandering answer)
-- Somewhat bizarre yet sometimes familiar setting, but darker & twisted than you think
-- Amazing story that draws you in and keeps you emotionally connected
-- Truly interesting and unique NPCs and party members you actually care about, not just meat shields
-- Feeling of consequence, whether real or not
-- Minimal SoSo (Same-old-Same-old)
-- Multiple replayability
-- LONG and Epic
P.S. Registered just for this - PsT is one of my top games of all times