《枪口》一款让玩家扮演密探进行潜入作战的游戏，游戏元素非常棒，很受玩家们喜爱，但游戏只是为2D渲染，有点可惜。本作主角的职业很有特色，是一名电工，而他特有的素质让他有了特殊的能力，是其能更好的完成任务。
游戏中的英雄有军人，《马里奥兄弟》中的水管工再到偷菜中的老农民，加上现在《枪口》中电工，如今游戏主角行列里的职业越来越丰富，也使得游戏越来越有特色。
枪口1号升级补丁
使用方法：
1.将下载的“游迅网_枪口1号升级补丁.exe”复制到游戏的安装目录；
2.双击打开，点击“开始安装”按钮即可；
3.运行游戏。
更新说明：
Bug fixes:
Fixed a bug preventing the game from rightly chastising you for excessively punching the same guard.
No longer possible to upgrade your trousers so much that they break the concept of linear time (divide by zero error).
Ryan Ike is now more talkative on Mission 5.
Fixed a bug that rendered the game unable to cope with how cool you look walking backwards into a subway with your gun drawn, leading to a crash.
Fixed an interesting bug that caused problems if you played on two different PCs that have the same desktop resolution but different install drives. Well, not that interesting.
New features:
Press F4 to toggle windowed mode anytime. This was already there, but we forgot to tell anyone.
