A new update for Valve's free-to-play shooter, Team Fortress 2, will add new features to the game, including cosmetic weapon and character effects, new maps and changes to Mann vs. Machine co-op gameplay.

The first part of the Two Cities Update has been detailed on the official Team Fortress 2 blog, you can see new Mann vs. Machine map, Mannhattan. The new map's robotic soldiers can "advance their own spawn points and introduce new bombs into the map for the first time," making the gameplay more interesting and versatile. The update will add another map, a control point map created by community member Toivo Sawen called Snakewater.

Weapon effects and Killstreak Kits will also be added in the game, players can apply those to weapons and craft for increasingly rare Killstreak Kits. The effects appear to make weapons glow and players' eyes emanate flames. For detailed information about the update make sure to visit the official Team Fortress 2 blog.