Long time ago, when your grandpa was young, he built a fortress which could have been used in case of Apocalypse. But the Apocalypse never came, so it stayed unused for so many years. Now when he is about to die, he told you about the fortress as it will be inherited by you. So you went to check up on that fortress and wanted to decide what to do with it. When you got there all you could find was some ruins. Everything was broken and you managed to lock yourself inside this fortress. Good luck to escape!
Walkthrough for Apocalypse Fortress Escape