While you can download and play all PS1, PSP, and PS2 titles from the library, you can only stream the PS3 titles via Sony's cloud servers and cannot download them locally. Let's take a closer ...

Of course, many PS2 hits are already available to play on PS4 by other means – some as PlayStation Network downloads, others as PS3 remasters you can stream via PlayStation Now – but as of now ...

Customers will have to buy a PS4 compatible disc to play the PS2 game on PS4. On the other hand, Microsoft is planning to make all its Xbox 360 game discs to work with the latest Xbox One for free.

The games retail for either $10 or $15 USD and include trophy support and up-rendered 1080p visuals. In related news, Parappa the Rapper 2 released on PS4 today.

At the moment, Rockstar's PS2 games on PS4 include Grand Theft Auto: San Andreas, Grand Theft Auto III, Grand Theft Auto: Vice City, Grand Theft Auto: The Trilogy and Bully.