It seems that Quantum Conundrum wasn't the only thing they were working on together.
Source: http://kotaku.com/5974545/the-fate-...ter-quantum-conundrum-and-more-gaming-secretsKotaku said:Seattle developer Airtight Games appears to be working on a second collaboration with publisher Square Enix, following last summer's lighthearted puzzler Quantum Conundrum.
The resume of a senior environment artist at the developer mentions an "unannounced AAA title" for PS3, Xbox 360, and PC for Square Enix. Lest you think this unannounced title is some mix-up referring to Quantum Conundrum, this artist joined Airtight in February 2012well after that game's announcementand his name does not appear anywhere on the Quantum Conundrum credits.
Rather, this Square Enix game seems to be Airtight's primary projectan "unannounced AAA title" it has been developing since the completion of work on Dark Void. The company's website describes this project as "another ambitious AAA title in a genre that is both unique and refreshingly unexplored."
Given the development timeline, Airtight's current AAA effort is likely a continuation of a project called Fate, a post-Dark Void project for an unnamed Japanese publisher which was temporarily placed on hold in April 2011 so that work on the game "could be reassessed." That decision resulted in much of the team working on Fate being let go. Assets from the time of the developmental pause suggested an aesthetic influence from BioShock, but the game has likely changed considerably since then.