Ryujin
Legend
I went more of a Star Wars route. I secretly gave everyone a 17 in their Psionics score which was just one below starting the game with Psi. Being enslaved by a Psionic culture, with the ability of increasing Psi score by implanting Psionic Gems in their foreheads, and it was almost guaranteed that the players would become "awakened." They didn'tOur alien invasion game turned into something of a superhero game as players (IIRC) stole alien tech and/or got bio-enhanced after being subject to alien experiments (I can't remember all the details of how it happened, but I remember someone being able to fly, and someone being able to shoot beams from their hands...)
I also think everyone was brutally honest with themselves and each other when designing theirselves as characters. Also, we didn't sweat it too much if we disagreed. "You think you have a high CON? Sure, whatever. Let's play."

This is the same campaign that I've mentioned in which the characters were searching for Forerunner tech and eventually got themselves a dimensional transporter (pretty much a portable short range Gate from Stargate, though almost a decade before the movie was released).