The complete game of "Critical Path" as a YouTube interactive game. Critical Path was a really old FMV choose-your-adventure sort of game. Kat's some army gal on a mission, you and Kat travel by helicopter to the bad guy's place until it's shot down by a missile. You're injured but make your way into a control panel room, hooked up to all the rooms in the bad guy place. Kat has to travel into the place alone, and your job is to fiddle with buttons to save Kat while you're watching the security cameras tracking her every move.
In short, you have to press the right buttons at the right times to save Kat. The YouTube version reduces the choices to "let Kat live" and "let Kat die", so you won't have any trouble getting through this. Just sit back and enjoy the... horribly dated graphics and bad acting.
But this game was awesome back in the day, man. I could never get past the catwalk part... thankfully the YouTube version skips that scene entirely since Kat could die a thousand ways in that particular scene.
The YouTube version only takes about 20 minutes to play. A behind-the-scenes video (which you get to see after you finish the YouTube version) talks about the game on the news and how it's pioneering a new genre of computer games. The newscaster claims the game will take 8-9 hours to complete. And back then I'd believe it -- the control panel has like 20 buttons and you have to read a journal written by the bad guy in order to get enough clues to know what to press and when. All I cared about was getting to the end of the story, so this YouTube version's a lifesaver.