Inspired by the great Dornian Heresy of Aurelius Rex, here is an alternate timeline to the Warhammer 40000 universe, where Guilliman turned traitor instead of Horus, and led half the Legions in rebellion against the Emperor. The Index Astartes are done for all Legions. Now, the Times of Ending have begun ...

The Citadel Council is a peaceful conglomerate of races, blissfully unaware of the horrors that lurk beyond their space. Humanity, meanwhile, is a race that has fought against these alien horrors ever since they made contact. What will happen when the two societies meet? Will peace follow war? Or is the Citadel Council doomed to fall to humanity? Rewrite of When Civilizations Meet.

At the dawn of the Great War, first contact was made between the protoss, imperious firstborn of the xel'naga, and the turians, proud militarists. As the galaxy catches fire at this sudden conflict, unlikely alliances are formed while ancient directives are carried out by the oldest minds in the Milky Way. The Koprulu sector has opened, and the zerg are loose. Now complete!

Crossover between SG1 and XCOM. As Earth fights against two separate extraterrestrial threats the defenders join forces and the tables are turned.