Playstation 3 is a gaming console, manufactured by one of the best technology companies of the world. It is the successor of the highly popular PlayStation 2. Although buying games would probably be your best option, you might sometimes not want to part with too much of your cash on them.
There are many sites that provide free download of PS3 games. Many of these sites require registration, where they might ask you for your e-mail address, for mailing advertisements, a small price to pay for all the free stuff! There are certain sites available online which would give you PS3 games:
http://download–ps3–games.blogspot.com/
http://www.brothersoft.com/games/download/ps3.html