Epic Games has been touting the potential of an interoperable metaverse for years , though that vision hasn’t yet become a reality. But with Unreal Engine 6, the next major version of its game development engine, Epic plans to take a big step toward that theoretical future: it will let developers make games that can use a player’s Fortnite skins and will let developers build skins of their own that work with Fortnite . “We’re tackling this problem first because we want to prove things out with a system that’s complex enough to be a meaningful existence proof of the idea, and one that inherently comes with a ton of player value by respecting their purchases across an interconnected ecosystem of games,” Marcus Wassmer, Epic’s EVP of development, says in a blog post tied to Epic’s State of Unreal keynote. Should this system work and get broadly adopted by developers, it could actually be pretty cool.…