Door Defense, a bloody action-arcade game which aims to calm the nerves and kill some time. Play the role of a door guard of a bunker with radioactive materials. Guard against crowds of nasty zombies that have a crazy idea to get into the bunker, and eat isotopes in order to become big and strong zombie mutants ... Your main task is to deny them entry, but if some do get in you will now be fighting the more powerful mutants. Your arsenal has no extra weapons, just a powerful six-barreled gun and you better know how to use it. Well, are you ready? Good luck!