Once downloaded, you'll need a suitable emulator to play the game. PCSX2 is one of the most popular and highly recommended emulators for playing PS2 games on a PC. It supports a wide range of PS2 games, including Dragon Ball Z Sagas, and offers features like cheats, savestates, and graphics enhancements.
A standard, untouched copy of Dragon Ball Z: Sagas (NTSC or PAL) has the following specifications: dragon ball z sagas ps2 iso highly compressed