The Gift: Ultimate Effort
Long ago, I was talking about superheroes and games with a friend. He mentioned how superhero comics tend to make their popular characters immortal. If only for commercial reasons. We wondered what it would be like if it worked the opposite way, with supers burning out and dying young. In an RPG, you could give the PCs an overcharge mode, a sort of instant win button, but with an increasing risk of death each time you use it. I was struck by how that could give a game a strong theme of self-sacrifice. Then I forgot about it, until I got to a certain point working on my Fate supers game, the Gift. I call it Ultimate Effort.