I thought this was a really cool part for some reason
For example Ultravision gives everything a purplish hue. In infravision you see the heat signatures of things. And this is actually incorporated into the game more than just graphically. Infravision might be great in a Gnoll camp at night, but in an Undead tunnel you won't see squat. Every creature in the game has been flagged as Warm-Blooded, Cold-Blooded or No-Blooded. So everything will show up in varying degrees of blues, reds and oranges, or just not show up at all. Walking down that aforementioned tunnel in Infravision you'd think it was completely safe and clear of enemies until that first blow landed on your unprepared skull.


