Activision Call of Duty 4: Modern Warfare for Playstation 3 - Manual (Page 9)

Play Online
Play online with anyone, anytime on Play Online. Select this mode from the
Multiplayer Menu to join a lobby, invite friends to your party or play a game.
Leaderboards – This shows you how you stack up compared to other multiplayer
mode players on Play Online.
LAN Party
Choose this mode from the Multiplayer Menu to play multiplayer games via LAN.
You may create or join a host from here.
Split Screen
Select this option to access the split screen multiplayer mode. Up to four players
may join the match. After all players have joined, select Continue to progress to
the Multiplayer lobby. In this lobby, the map, game mode and game rules can be
modified before starting the match.
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