Having grown up with the first generation of FPS games (Doom and the so called "Doom clones", as every FPS was called back then), I remember how amazed I was as a child when I first saw in Duke Nukem 3D shell casings being ejected from the pistol, or shotgun shells during the pump-action animation.
And i was way more impressed when shell casings started to remain on the floor in the second generation of FPS games (i'm thinking of Soldier of Fortune, though there might have been something earlier).
I'm not kidding, a detail like that back then (along with bullet holes on walls!) could make a game successful, it was that revolutionary (before every game started to implement it). Recently, I realized I had never even thought about including this detail in EMPTY SHELL, so I quickly fixed that : )
Just a small detour of a few hours before getting back to the main work (still distribution and balancing, but i'm almost done).