I beat Disruptor on the PS1. It's the first game Insomniac and they would proceed to work on Spyro afterwards. Disruptor itself is a pretty middling FPS (or, in the terminology of the day, "DOOM clone") with the added hook of psionic powers. It's only four hours and would have made for a decent rental back in '96, but I wouldn't recommend it unless you're really into goofy live-action FMV cutscenes. Had fun streaming it for friends though.