unfortunately you can no longer purchase this game series

The "No One Lives Forever" series, despite its critical acclaim and popularity among players, faced a significant obstacle in terms of its intellectual property rights. Due to complicated legal issues surrounding the ownership of the game's rights, including disputes over licensing agreements and the dissolution of the original developer Monolith Productions, the series has remained unavailable for purchase through digital distribution platforms like Steam or GOG. As a result, fans of the series have been unable to officially purchase and play the games for many years, leading to frustration and disappointment among the gaming community. ... https://www.youtube.com/watch?v=hxuKYKCvczA