The Doom engine is a computer program that can render 2-D blueprints into a 3-D space. Because the engine is open-source, DIRTT was able to adapt it for their own needs--for example, ICE “melts” with other design softwares, including AutoCAD. An engineer or an architect can use ICE to mock up a room, and create a live data set for every aspect of a space, including the electrical engineering, millwork, and piping. When those blueprints are taken into the shop, everything is constructed at the same time and put together so that there are no inconsistencies. Instead of working on each component at different times by different people, they're all done at once by the same machine.