Now input these network details:
Network Name: Matic Mainnet
New RPC URL: https://rpc-mainnet.maticvigil.com/
Chain ID: 137
Currency Symbol: MATIC
Block Explorer URL: https://polygonscan.com/
You are now ready to go! Just make sure the Matic Mainnet is selected from the drop-down menu in MetaMask when using this website. Visit the wallet page to see your tokens/skulls or visit the utilities page to mint new random skulls.