 Three of these powers (the Helgardian Protectorate, the Arachnid Worlds of Unions and the Mallaran Empire) were presented in playtest form in "SFB Module E2", while the Imperium was previewed in "Captain's Log #23".Many other empires are noted as being present in this setting, including the Human Republic (founded by a Terran colony caravan which was displaced from the Milky Way in -Y12).The Triangulum setting awaits formal publication in a "full" published module.