A few updates:
Tyranny owners - 190,719 ± 12,590
Torment: Tides of Numenera owners - 113,736 ± 9,723
Planescape: Torment: Enhanced Edition owners - 27,618 ± 4,792 (released Apr 11, 2017)
Expeditions: Vikings owners - 25,879 ± 4,638 (released Apr 27, 2017)
The Long Journey Home owners - 19,137 ± 3,989 (released May 30, 2017)
Tyranny has entered the 190,000 range, it was discounted by 50% for a day or so during E3 so that + the announcements should help it cross 200,000 soon. Torment is sliding backwards from from its peak of around 128,000. Planescape is off to a slow but steady start, while Viking is still more than 100,000 copies away from Expeditions: Conquistador (144,399 ± 10,956 owners).
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New to the thread, but is there a reason why the Enhanced versions of Baldur's Gate I and II are not included in the respective Tiers? Also curious how much Siege of Dragonspear has sold, and what Beamdog would need to cover the production costs. Even if 10% of BGII Enhanced owners have it, that would add up to 40,000+ copies.
Baldur's Gate: Enhanced Edition owners - 595,209 ±22,231
Baldur's Gate II: Enhanced Edition owners - 415,581 ±18,580