I managed to write a post-mortem about Nightfall, my Ludum Dare 32 jam entry. The theme was An Unconventional Weapon, so I made a simple game using the darkness as the weapon, loosely based on Isaac Asimov’s Nightfall short story. See a fragment of the post-mortem:
What is the game about
You control Doctor Sheerin, a brilliant researcher who finds a new and amazing thing: The Darkness. But his new discover didn’t got the attention of the population the way he desire: they want to destroy it. People are afraid of The Darkness, since the planet they live is surrounded by light all the time at each single point of its surface. So Doc. Sheerin must protect the reactor, a huge machine that generate and nurture a practical gun that fire shots of darkness at things, reacting extremely weird at living beings.