Sins of a Solar Empire: Trinity is Now Available on Steam and 25% off until November 23rd 10AM PST.
In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes. Your success will depend entirely on your ability to manage your empire and command your vast fleets of starships to victory.
Source:
Store.steampowered.com
Bought it on steam and enjoying every minute of it :)
for some reasons mods don't work for me the steam version of trinity