The most legally sound way to acquire games for DuckStation is to "dump" or "rip" them yourself from physical media you already own.
To enjoy retro gaming on DuckStation, you need both the emulator software and game files, often referred to as ROMs (or ISOs for disc-based systems). DuckStation is a high-performance PlayStation 1 (PS1) emulator available for Windows, Android, Linux, and macOS that focuses on playability, speed, and long-term maintainability. Legal and Safe Methods to Obtain ROMs duckstation roms download