Hellvyre and I were talking about when we played minecraft back in the day. I asked if he remembered making a flat world of sand with no bottom layer, then punching it, and the world just drops and kills your computer.
From that we collaborated something I personally love... A character who lives in a world of sand. He has no recollection of how he got to this world. But he knows a few things. He can fly, he can build from the sand, and he can breathe life into the sand, but he does not control the life he creates.
As the world goes on, he flies faster and faster, he learns to build extravagant cities and wondrous landscapes. He comes to love the people he breathes life into, sometimes he acts as their god, because he's technically the god of this world he's woken up in in the first place. He becomes friends with his creations, and falls in love with them, but he always knows that a day will come where the sand will collapse at the edge of his world, and he'll be forced to move on once more. He can build and build, but it will never last, and he'll lose the people he's come to love. He chooses to never rebuild a place he's created, because there is no such thing as re-experience when you craft from memory alone. So he builds anew again and again.
I want to explore this concept so much further, because it has a great setup for the character's development, as well as psychological exploration, and philosophical delves.
Sooo... Minecraft sand on a superflat world is a weird one? Yeahhh... I don't know where my life is headed.
Edit: Sorry, I know you asked for prompts, and probably want something for us to spark ideas in other people, but I really want to write this myself when I finish my current novel. But I really wanted to share the thought, because fuuuuuuuuuuuu