SP Zombie Apocalypse

As you stand there, frozen in fear, you hear a voice behind you. It's your best friend, Kenny. He grabs your arm and says, "Come on, we have to get out of here!" You both start running towards the nearest exit, but the zombies are closing in fast. Just as you think you're both going to be eaten alive, a group of strangers appears out of nowhere and starts fighting off the zombies with guns and other weapons. You and Kenny join them, and together you manage to escape the school and make your way to a safe house. From there, you learn that the zombie outbreak is a result of a government experiment gone wrong. You and your new friends must work together to survive and find a way to stop the zombies once and for all.