If you need a Delta Client to access a specific private server, verify the server's official documentation first. If you simply want to mod a game, consider open-source alternatives like Prism Launcher (for Minecraft) or standard mod loaders. Do not download a Delta Client just because a sponsored link told you to. Disclaimer: This article is for educational purposes regarding software safety. The author does not endorse the use of third-party clients that violate software terms of service.