I just realized that
The Chronicles of Riddick: Escape from Butcher Bay seems to be unavailable in all digital game stores. I own the sequel Assault on Dark Athena, which also included a remake of the original, on Steam (not possible to purchase anywhere either), but it does not work due to the ancient copyright protection scheme (Tages) used.
That is pretty sad, I guess? I knew that games got delisted from time to time, but I could not have imagined that a game like this would disappear. It was one of the best first person action games of its time and part of a lineage of great first person action games in the same vein.
If some young person likes the new Indiana Jones game and wants to check out past related titles, they now have to go the warez route to install Riddick, a game that was last released on PC as an enhanced edition in 2009?