Killzone 3 is integrated with a maximum of Home

Seriously this time ... Killzone 3 will be one of the titles to take advantage of greater integration with the PlayStation Home service. In fact, by next January 27 will be able to travel to the area specifically dedicated to the Guerrilla title (a section destroyed by an attack Helgast ISA) and exploit a number of interesting features.

You can participate in mini-games in three levels to obtain useful scores in cashable multiplayer title of new weapons and abilities for multiplayer. Participants must be at least 18 years. Source: Joystiq

• 'Killzone 3′ Features Total Game Integration With PlayStation Home (25/01/2011)
• Killzone 3 includes admission into SOCOM 4 multiplayer beta (19/01/2011)
• 'SOCOM 4′ Beta with 'Killzone 3′ in US, UK Plus Members Get Instant Access (22/01/2011)
• Killzone 3 Open Beta Begins February 2 For PSN (21/01/2011)
• Get SOCOM 4 Multiplayer Beta Access When You Buy Killzone 3 (19/01/2011)

Killzone 3 (wikipedia)