Yeah I have an Ivory Portal. I'm not a fan of Enviro personally. More of an NFT gallery than metaverse. And I've heard that they've yet to purchase the license for the engine that they're using, which would cost ~$1.5m. They made that and then some from the mint proceeds so they should have no problem paying for it. A bit concerning they haven't yet though.
A lower-key Solana metaverse play is
Desolates. Passionate/ambitious/cracked/etc dev team

. Has been brewing since early November. Started as an NFT gallery but quickly evolved, and is still evolving. They had their final mint earlier this week and just today have made a nice run to ~5 SOL floor. Will be crosschain (ETH), and a lot of Neo Tokyo heads are on board. This is a hot, hopium fueled take, but I wouldn't be surprised if they challenged Portals for the top metaverse play on Solana.
Get in early, have some patience, and flourish

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NEAR seems to be building some hype for a new chain with NFTs. The main marketplace is hot garbage that's how you know it's still early

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Munkey Monkeys might be a play but I still have to do some research.