The PCSX2 project has been running for more than ten years. Past versions could only run a few public domain game demos, but newer versions can run most games at full speed, including popular titles ...
If you plan to use your PS3 controller with the emulator, click Browse to navigate to your PCSX2 installation folder, then click Enable to install the patch. Voila!
Note - Repacks are compressed versions of games that exchange smaller downloads for longer installation times. Good if you have low bandwidth or data limits.