Well, hopefully NASA doesn't beat me to the punch. I'd like to design a space exploration game set 100 years into the future. The technology used would include nano-tech, as well as technology listed in email newsletters from KurzweilAI.net. In the game, SETI finds "THE" signal, and technology is worked on to reach the planet where it originated, as well as send a ship there to greet our fellow sentient-beings. The game would also involve regular space exploration of the solar system and deep space. Meanwhile, another exploring race finds our Voyager probe and take us up on our offer to say hello.