Batman: The Dark Knight was a game in development at Pandmic Studios that was canceled before release. It was an open world Batman game set during the night with HDR volumetric lighting and light mapping. I worked as an engine developer.
Wrote a templating shader system using HLSL and Lua as a templating language.
https://en.wikipedia.org/wiki/Batman:_The_Dark_Knight_(video_game) (not entirely accurate)