John Calhoun, developer of Glider Pro, has decided to make Glider Pro available for free! Both 9 and X versions are available. Thanks John! Glider was one of the games that was distributed by the now- (and saddly) defunct Casady & Greene. Glider is a fantastic Sim-ish game in which you simply navigate a paper airplane through a house from one end to the other. It's a hell of a lot more fun, and harder, than it sounds.