Sims
Okay, to the piss topic.
That would be a little bit too real eh? It would be like you need to buy fuel in GTA :|
Sure its more realistic, but the the game gets shit, though sims is just filled with unrealism. Food gets uneatable after 4 game hours you pee every hour, you shit every 2 hours, you can put your clothes off in 1 sec etc.
Also a huge fail in ego shooter history: You reload, you still have 10 bullets in your clips, but you put a whole magazin in, noow, why the fuck you dont loose the 10 bullets? :O