Chain game publisher Xterio has announced the launch of XterETH Chain, which is based on the OP Stack and joins the Optimism Hyperchain. Xterio says its proprietary back-end and front-end solutions allow seamless integration of on-chain ownership into high-quality games across desktop and mobile platforms. Xterio studio Overworld has also launched the Web3 microgame Overworld Arena, where players can play 1v1 matches using Arena Coins.