- Can a U.S. PS3 play Japanese or European games? What about a European PS3 playing U.S. and Japanese games?
No, none of them can play games outside of its region without modifications. Japanese systems also have a region lockout system.
- Is the PS3 backward compatible with all older PlayStation games?
Yes. Most of your original PS One games will work with the PS3. Depending on which game you put in the PS3, the graphics and loading time can be improved by accessing the PS3's hardware menu and by selecting "smooth" and "fast". Games like Final Fantasy 7, which have prerendered backgrounds, will have little affect since they are obviously prerendered and aren't created in real time.
- Which PlayStation One peripherals will work with my PS3?
All of them officially licensed by Sony, including memory cards. The PS One multi-tap is an exception though. You'll need a PlayStation 3 multi-tap. Note: Some PlayStation 3 games are not compatible with the Dual Shock 1 because it does not feature analog symbol buttons.