No region locks thankfully =)


Sony
The PlayStation and PlayStation 2 consoles are region-locked.
All PlayStation 3 games except for one are region free.[4][5] Even though publishers could choose to region-lock specific games based on a mechanism that allows for the game to query the model of the PS3, none did so during the first six years after the launch of PS3.[6] The first game to be region-locked on PS3 is Persona 4 Arena;[7] publisher Atlus declined to reverse its decision despite substantial outcry by some of their fanbase. The decision was made to avoid excessive importing, due to all versions of the game sharing the same features and language support, but differing release dates in each region. There is region locking for backwards compatible PlayStation and PlayStation 2 games, as well as DVD and Blu-ray Disc movies. Additionally, some games separate online players per region, such as Metal Gear Solid 4 Online. PlayStation Store only contains content for its own country, for example the EU store will not supply usable map packs for an imported US copy of Call of Duty 4. In addition, downloadable content for the PlayStation 3 systems is region locked, so you need to buy DLC from US PlayStation Store to use it in a US game. More specifically, the PS3's file system includes region-of-origin, so DLC cannot be shared between different region games much like save files cannot.
PlayStation Portable has no region locking for UMD games.[8] However, UMD movies are locked by region. Furthermore, the firmware will disable features based on region. For example, Asian region PSPs will not display the "Extras" option on the XMB despite having been upgraded to the US version of Firmware 6.20, preventing owners of such PSPs from installing the Comic Book Viewer and the TV Streaming applications. Sony's states that the "Extras" function will remain disabled on Asian PSPs until the features are officially launched in the region and gives no reason for the option being disabled aside from that it is not yet launched. Nevertheless, this denies Asian PSP owners from using the above mentioned applications on Asian PSPs, as the applications are installed through a PC and users from the region are not blocked from downloading the application, allowing installation on non-Asian PSPs that have been imported into the region. The Metal Gear Rising Revengance is the first region locked demo The PlayStation Vita has no region-locked games thus far.