There was a game called Advent Rising. It wasn't a great game, though you did get a telekinesis power which you could use to throw bad guys into power conduits, but my problem is, it ended on a cliffhanger, and It never got a sequel. It was supposed to, but it didn't. They planned a trilogy, they didn't get one.
Then there's Tron 2.0. Underrated in my mind. Yes the acting was shit; but the environments were surreal; and the science was soft; and the plot was solid, yet ridiculous; and I for one loved it. But it ended with a lot of questions in the air with no sequel. What happened to the fCon trio? Who's the fCon CEO? Where the fuck is Flynn!? I'd be less pissed if it was considered part of the same canon as Tron Legacy, but it wasn't.
I miss that game. Where are those CDs!?