GameTrailers released the debut teaser above overnight, but we think we've already figured out exactly which "Mystery Game" they're trying to lure us in with.
You'll notice right off the bat that the top of the screen dates the trailer at December 21st, 2037. There's another futuristic game that took place in 2037. The original SiN, developed by Ritual Entertainment and published by Activision was set in the same year. SiN Episodes, and episodic sequel to that game saw one release in 2006, but has since been dark.
The other obvious connections include the armored enemies and the female protagonist, but we'll have to wait until GameTrailers reveals the title before we can confirm our suspicions. What are your thoughts? What is the mystery game?