Can you play CoD5 on a laptop online and play against PS3 players?

May be...

If I have Call of Duty World at War for PC, can I play in multiplayer and play against people with CoD5 for PS3?

there are seprate servers for all diffrent platforms usaully like theyll have a server for xbox players of a game and ps3 players of the same game and pc players of the same game they usaully keep em seprate but ive heard in a few new up coming MMO's there gonna bring players together from all the platforms the game will be on...

Sadly, no company has created a "joint online experience". PS3 people can only play against other PS3 users. PC players can only play against other people who have a PC. Sorry

No.



Occasionally there is an Xbox Live promotion where PC gamers and 360 gamers can play together, but that's only once in a great while.

no the pc,xbox 360,and ps3 servers are separate. back in 2000 the servers were mixed for some games it was so fun hearing the fan boys argue

Nope.

Only with PC users.

only for your pc against other pc playas

nonononononononnoonnonononnonoononononon...

and no

Nah

No

idk

no u need a ps3 to play against ps3 players