有2個方法
1.
係遊戲中/岩岩入GAME個介面到禁~制
輸入version
會出面以下呢幾行
Version 2.0.5.0 (left4dead2) <--
呢個就係你而嫁既版本
Network Version 2.0.4.2
Exe build: 10:47:36 Oct 13 2010 (4346) (550)
2.
係l4d個路徑到 x:\steamapps\common\left 4 dead 2\left4dead2
係呢到目錄到 會搵到1個叫steam.inf 既檔
用筆記本去開左佢 會見到以下呢堆野
// NetworkVersion is the version in the wire protcol between client<->server,
// its not used for matchmaking, PatchVersion is used for that to ensure
// we don't get cross connecting to different releases. Only bump this if
// you know an incompatible change has happened to the network protocol in
// game and old demos will not work.
NetworkVersion=2.0.4.2
PatchVersion=2.0.5.0 <--
呢個就係你而嫁既版本
ProductName=left4dead2
appID=550