1 to 4 players
No, PS3 players cannot play with Xbox 360 players online.
No, but you can link the Vita to the PS3 console
No, PC players can play PC players, PS3 with PS3players, Xbox with Xbox players, and so on. -RedLemon
1 - 4 players max in a game
nope PC players vs PC players, and PS3 vs PS3 players
if you have an xbox 360 or ps3 you can play online multiplayer
The PS3 connects to the Playstation network for online players and it is region set. The web browser is worldwide, but for game play the PS3 will only play within the region and only other PS3 players. Xbox 360 and PC games are not even compatible with the PS3 even if they could play.
Attach 2 controllers onto your PS3.