"Why Microsoft? They are a company that is in both of those spaces; they're heavily in the PC space; they're heavily in the console space," Hines said. "They had some pretty good ideas about how to make something like this work."
The Fallout 4 Creation Kit will launch in early 2016 for PC, with supported mods coming to Xbox One sometime later. The functionality is expected to launch on PS4 further into the future.
"We're hopeful that it's out on PS4," Hines said. "We'd like this to be something that works across [all] platforms."
Hines stressed, however, that the functionality doesn't yet work on Xbox One--there are still a range of problems that must be overcome.