Today, we would probably call this a trailer--but in 1990, it was a world-shaking event. The Wing Commander I demo walks through footage of both the gameplay and the gameflow... and back then it was showing people something they'd never seen before. Today it remains a fascinating artifact--check out all the minor differences between the demo and the (like that Hornet VDU!). Download the demo here (part 1) and here (part 2). You can also find a video of the demo on YouTube.