Pete Hines: "You're not adding new features in May, June, July in the year you're releasing; you're trying to get everything fixed."
Bethesda's head of marketing told GameSpot that Fallout 4's Boston setting was set many years ago.
The Fallout mobile game is coming to non-iOS devices in August.
Dog Meat, your armor, and more were explained at the conference.
Read on for the full list of winners.
Digital bottle caps are the de facto currency in the wastelands of Fallout 4, but Bethesda Softworks accepted one guy's ingenious plea to let him pay for the game with real ones.
Bethesda vice president Pete Hines: "I don't know if we'll do one again. This year felt like the right time to do this kind of thing."
Fallout 4 will run at 1080p and 30 frames per second on consoles. Frame rate and resolutions will not be limited on the PC version.
Bethesda's mobile game set in the Fallout universe skyrocketed to the top three grossing apps in the iTunes app store within days of its release.
Bethesda creative director Todd Howard reveals at E3 2015 that he expects the feature to go multiplatform eventually.