PCSX2 is a Playstation 2 'emulator', a free program that tries to replicate the Playstation 2 console to enable you to play PS2 games on your PC.
Advantages over the Playstation 2 console:
Custom resolutions, up to 4096x4096, Anti Aliasing, and Texture filteringUnlimited memory cardsSave states, enabling you to quick save and load practically anywhere in your gameEasy cheating using our pnach patching systemUse any controller or keyboards and miceIncrease or decrease the game speed by using the built-in frame-limiterAbility to record in full HD with the built-in video recorder (F12 using the GSdx plugin)