If some officer can cobble together a proof of concept from COTS parts and show that it is just as reliable and effective as the boutique stuff from Raytheon, et al., at a way cheaper price, you bet that it will be met with considerable attention if not approval. Most ground-based military drones these days are controlled with Xbox controllers because those controllers are cheap and ubiquitous. In the 90s, Doom (with mods) was pressed into service as a simulator to help teach Marines fireteam tactics.

About the most stiff-necked branch of the U.S. military is the Navy. I'd be more surprised if the Navy approved a PS3 supercomputer, especially if it were to be run aboard ship.