Not very long, but indeed a sweet FPS game. This was the first game by famous Insomniac and the start of their partnership with Sony. More on the linear side, levels looking really nice and unique, so it not gets boring visually, as a lot of FPS games from the era do. Definitely a more enjoyable experience on PS1 than terrible ports of Dark Forces or Duke Nukem 3d. The game also has cheezy FMV cutscenes and simple character abilities system, which is still, utilized in gameplay. Old chunky controls aimed to fit the original pre-analog PS1 controller may scare people who do not get used to "Traktor" control schemes.