사용자:WhiteDecember/연습장
(사용자:Urty5656/연습장에서 넘어옴)
On May 7, 2010, Valve released an update that includes new features and functionality developed in collaboration with Hidden Path Entertainment. These include 144 new achievements, a new domination and revenge system, similar to that of Team Fortress 2, player stats, the orange box engine and more. It is currently in a limited public beta stage.[10]