Diamond Trust of London, Sleep is Death and Inside a Star-Filled Sky, has a new game in the works titled The Castle Doctrine. It's "a massively multiplayer game of burglary and home defense" and will come soon to PC, Mac and Linux, according to its official site (which is pretty barebones at the moment).
The website does reveal a few images, two of which are side-by-side above, showing what we can assume is The Castle Doctrine, unless Rohrer is trying to really confuse everyone. It looks to be a top-down, 2.5D pixel-fest with puzzles and some things covered in blood. How fun.