The Hold Out
You were at the zombie hospital when the zombie apocalypse happened. The guard was dead, so you took the gun and vow to defend the hospital against the zombies. You want some help, but ti seems that you are the only guy with the gun, so you have no choice. The idea here is to defend the hospital against zombies. The game is played with a mouse and keyboard. Keep shooting at the zombies till they are down. Do not worry as you would eventually find a better gun. You can use the remaining hours to repair the barricade or look for better guns.