Good afternoon, I am amazed by your game and I want to contribute to it in the form of an idea for a signal from space. So, in Liu Сixin's novel "The Dark Forest," the idea is expressed of how civilizations can destroy each other without weapons. The idea is that the dark forest has an infinite number of civilizations. A civilization sends a message into space in the form of a star map with a star highlighted. Most civilizations will ignore this message, but at least one will be afraid that a stronger civilization is sending its coordinates. Sooner or later, she will find the recipient and destroy it. Therefore, the recipient destroys the star system highlighted on the map, so as not to die herself. Thus, it is possible to make an interesting signal, during playback of which a certain star will stand out, possibly with some signatures. If you're interested, this is page №340 of The Dark Forest book. Thank you so much for your attention and good luck with your game!