With the presentation of the first trailer at PAX Prime 2011, Kim Swift – one of the Narbacular Drop and Portal designers – has revealed the new title of Airtight Games studio, titled Quantum

Players assume the role of a child sent in an weekend at the mansion of his eccentric uncle, Professor Fitz Quadwrangle, where they discover that he has mysteriously disappeared, leaving behind but a device that allows passage from one dimension to another.