In 1989, at a small company called DNA Design, some animators were fooling around with some simple walking characters. They made a little demo animation of them getting crushed, mashed, and zapped. One of the other programmers laughed and said "There's a game in that", and a little more than a year later they released "Lemmings".
The world is full of intriguing ideas that, like those animated walkers, could start people thinking and creating new ideas of their own. They can come from artists, historians, architects, or scientists. This is a collection of some that have caught my eye and that made me think "there's a game in that".