PS3 shooter Killzone 2 received its first post-release content today in the form of a map pack. The "Steel and Titanium" map pack can now be downloaded through PSN for $5.99.
"Steel and Titanium" contains two multiplayer maps. The first map takes place on a Helghast freight train ("Steel") while the second brings players to an ISA attack cruiser ("Titanium"). Trailers for each locale can be seen here.