Lone Survivor
Game: http://www.kongregate.com/games/superflat/lone-survivor-demo
Awesome game, just got it on sale on steam, admittedly, I am hoping for hacks that'll work for the full game too. The game might use money later on, and that may be hackable, but mostly I want to see if there's anything to be done about certain constraints such as eating food, the passage of time, and sleeping.