Platform(s): PC, possibly DOS
Genre: First person... shooter? Horror? Puzzle elements? First person energy manipulation thing.
Estimated year of release: must be between 1998 and 2004 turns out it's just dated, it was 2008!
Graphics/art style: Early 2000s 3D, looked worse than Half-Life 2 and akin to Thief or Deus Ex; the UI occupied a lot of the screen and was very organic, with lots of 'vessels' that hold coloured liquids/energy. The overall aesthetic was quite dark.
Notable characters: Unknown. Protagonist, possibly a voice talking to them.
Notable gameplay mechanics: You could drain lifeforce/energy/colour out of certain elements in the environment, and it would fill your weird UI flasks/bladders, and you could expend that energy elsewhere. To what effect, I don't remember. I don't recall any actual enemies.
Other details: Game is spooky, looks weird, and I recall walking in an area that was like large tree branches over a chasm.
