I never win this game.
It's also boring, ugly, and at a level of sophistication roughly equivalent to a depressed fourteen-year-old kid's poetry
Waaah, life sucks And you're going to die Isn't it horrible And meaningless?
Portal at least has some craft to it.
It's very short (5 minutes,) free, and you don't have to worry about anyone in the class not having enough skill to complete it.
It's also communicates in a way that only a game can. The rules of the game themselves are most of what gives it its expressive power, not the narrative or the visuals.