So - If you’ve got £14 to spare, I suggest you go onto Xbox live arcade and download this gem. For just 1600 Microsoft points you can an awesome zombie survival game. Where killing zombies isn’t just the main aspect of the game, you actually have to go to different locations and find stuff for your HQ.
You can send parties out to scavenge for food, materials, ammo and medical supplies. You have to help others around your base and in the surrounding towns, earning you supply bonuses and opening up relationships with other characters in the game - Once you’ve helped people out, it then allows you to trade goods with each different camp around your base. So you can swap ammo for medical supplies, or materials for food - etc.
For £14 this game has to be bought! Get on it!