RisenWorld: Number the Stars

From the introduction: . . . And then the flash went off. It was so bright that nothing else could be seen for several seconds afterwards. That was as bright as a... just what was that bright as? You try to think of something to compare the light to, but draw blank after blank. There is nothing in your memory to compare this to. Or anything else, for that matter. User summary: This sourcebook presents resources for playing the game in a science fiction style setting.