No One Lives Forever demo. 

Playable technology demo of Monolith's first-person shooter that delivers over-the-top action, tense subterfuge, outrageous
villains and wry humor in the tradition of the great 1960's spy films and TV shows. 

Minimum Requirements: 

300 MHz Pentium II 
DirectX 7.0 
3D Accelerator 
250 MB HD space 
Windows 95/98/2000