I want to know the answer to the following question:
What popular game was demoed in a video at the game shows?
All the background I'm provided with is that "A functional version of the system was not present there, nor at the Tokyo Game Show in September 2005, although demonstrations (such as Metal Gear Solid 4: Guns of the Patriots) were held at both events on software development kits and comparable personal computer hardware.". Is that enough to answer the question?