The PS3 is region free, but are PS1 or PS2 games also region free?
PS3 region code
PS3 games themselves are region free, however the DLC items for the game usually are not.
Example: If you buy a North American game and you want to buy the additional DLC for it you would need to buy it from a north American PSN Store.
If you buy the DLC from a European or Asian PSN Store, chances are it wont work with your copy of the game.
"And even some PS3 games are region locked. The PS3's themselves are not region free, but most PS3 games are made region free, although publishers can make them region restricted if they want."Nope, PS3 games cannot be region locked.
PS1 games downloaded off of PSN are also region free, but you might run into PAL/NTSC problems depending on where you live and what store you're buying from.
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