Imagine a house filled with thousands of rooms, each unique in some small way. Now pretend that its occupants are mysteriously absent, yet the house is teeming with life, and there is no connection whatsoever to the world outside -- not even a single window. Goldfish jump in and out of their bowls, which are haphazardly placed; a nearby basketball bounces of its own accord. Elsewhere, an exposed pipe drips water in a darkened room and balloons magically rise through the floor.
Paper helicopters materialise out of the ether, only to disappear just as suddenly, while two slices of bread hop up and down in a toaster that sits on a small table. And you are a paper airplane, at the mercy of air currents, whose very survival depends on the avoidance of these strange and wonderful -- yet simultaneously mundane -- household objects.
This is the world of Glider, a classic Mac game with a devoted fan base that remained strong for over a decade. It spawned from the mind of John Calhoun, whose childhood was filled with dreams such as the one described above. His dreams took on a kind of reality with the release of Glider 1.0 in 1988, although this first version was rather simpler.
The game evolved considerably over the following decade -- growing in depth and complexity, expanding its fan base, adding a level editor, and even picking up a commercial release. This is the story of the origins and evolution of Glider, from its humble beginnings as a mere experiment to the aftermath of Glider PRO -- the final version of the game.