The Maelstrom Mod introduces four new races to the Sins of a Solar Empire Rebellion Universe. They are independent of the original races and have unique strengths and weaknesses. Maelstrom is available for Rebellion, Diplomacy, Entrenchment and Original Sins.
Awesome is the first word. Its 99.9999% complete in my opinion. Only thing is that the dreadnaughts need some size buffs and there is a glitch with the aura planets that when you rotate the camera the aura planet rotates too.