Currently, Creaticles is running on the Ropsten testnet. The Ropsten testnet is one of a few different test networks for Ethereum. The purpose of a testnet is to provide a safe environment for new decentralized applications to test their apps with real users. In a testnet, no real crypto is exchanged, so no real crypto can be lost if something goes wrong. To interact in a testnet, though, you'll need some testnet Ethereum. We'll show you how to setup Ropsten Testnet on your MetaMask wallet, as well as get some testnet Ethereum.