Sony Corp. this week released Killzone 3 Multiplayer to the Playstation Network division of the Playstation 3.
The multiplayer component is free to play and includes Guerrilla Warfare, Warzone, and Operations game modes.
Users can play until the rank of Sergeant 1 before a prompt to unlock the full version at $14.99.
The full version includes four exclusive new Trophies, 24-hour Double XP Bonus, Three Unlock Points, Clans, Custom Games, and Botzone Mode.
Killzone 3, released in 2011, includes a single-player campaign and online multiplayer component. In addition, the title includes Playstation Move and 3D support.