原版半条命，原版名称为HALF-LIFE ，是由Valve软件开发，雪乐山公司最早于1998年出版的一个科幻类型的第一人称射击电子游戏系列。最初的版本是针对微软的Windows操作系统的，后来由Gearbox Software开发了Sony的PS2版本。游戏开创了FPS游戏的新规范，开启了MOD模组游戏热潮。

基本信息(Half-life, the original name for the HALF-LIFE, is developed by the Valve software, Snow Hill Company first published in 1998, a science fiction type first-person shooter video game series. The original version was for Microsoft's Windows operating system, and later developed by Gearbox Software Sony's PS2 version. The game created a new standard FPS game, opened the MOD module game boom.)