Sentinel

In 1959, NASA launched a monkey into space. Ten years later they landed two men on the Moon.

In 1997 3D Realms announced Duke Nukem Forever. Ten years later they released two crappy screenshots.

I hope development on the game continues as a living monument to failure. Future generations will be able to say, "If you put your mind to something, you can accomplish anything. You can even put a man on the moon. But if you lose sight of your goals and waffle through life, you'll make Duke Nukem Forever."