Quantum Conundrum +
Quantum Conundrum is a first-person action video game by Airtight Games and published by Square Enix. It is designed by Kim Swift, who formerly worked at Valve as a lead designer on the critically acclaimed Portal. The game was released on Microsoft Windows via Steam on June 21, 2012, and is scheduled for release on July 11, 2012 on PlayStation 3 and Xbox 360.