Game where i can sell organs (pretty good idea).
I think that i have got bug (or i really unlucky) and i cant find uncorrupted lungs. Also combat with zombies fills like a grind. After death guests and inventory are saves (i think it was done to be able finish game without problems).
Anyway i got this game feel when trying to find organs that i need and was happy when actually found what i need. So I think you've got the basic gameplay loop that you put into the game. Good job!