Stellaris is a game that takes place in a galaxy where the dominant species is the Stellarisians. The Stellarisians are a species that has developed advanced technology and have created an empire that spans many galaxies. Their artifacts are some of the most famous and valuable in the game. Some of these artifacts include the Star Forge, which allows players to create their own stars and planets. The Star Forge can be used to create new empires, as well as to build up your own forces. Another important artifact is the Crystal Palace, which is a large building that can be used to store resources and equipment. The Crystal Palace can also be used to train your troops, so you can fight against other empires or players.