On Friday, Improbable—which was reportedly valued at $3 billion when it raised funding last fall—opened up early access to its MSquared tools. MSquared (M²) is a creation suite for interoperable online worlds, spanning a network, tech stack, and metaverse markup language (MML) for creating digital assets and experiences within those worlds. In other words, it’s a metaverse creation engine—and all part of what Improbable co-founder and CEO Herman Narula called a “stupidly ambitious project" and a "network of metaverses." Meanwhile, Epic Games and Nike have officially launched NFT integration into Fortnite.