Cosmic Strife.
No domain campers on the URL
Nothing else using it that I can see.
Matches my game
Easy on the ears.
Only potential problem is Sony has Cosmic Rift, which is a similar genre of game. But by the same token, Star Wars and Star Trek also differ only by one word, are both Sci-Fi movies, and there seems to be no problem there. Strife and Rift are totally different words as well so one couldn’t take that argument either.