An ambitious new collecting, crafting, and construction system is coming to Fallout 4

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See the new Fallout 4 base building in the video above.

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Collectible scrap pieces can be found in every item in the Fallout 4 world, finally giving substance to the trash and trinkets scattered throughout the world. Modifications to weapons allow you to completely alter your weapons' individual pieces, and therefore what they're capable of – whether it's a spiked or saw-bladed bat, or a gun with various stocks, scopes, sights, and other attachments.You can also modify your Power Armor to increase RAD resistance and more.The things you craft have a reliable and believable logic to them as well. You may need to construct a generator and connect it to your homemade creations to power them.

See loads of new Fallout 4 footage in the E3 demo above.

Mitch Dyer is an Editor at IGN. He hosts IGN Arena , a podcast about MOBAs. Talk to Mitch about Dota 2, movies, books, and other stuff on Twitter at @MitchyD and subscribe to MitchyD on Twitch