Jump was created for the XKCD Game Jam. It's based on the XKCD comic of the same name (created by Randall Munroe, available under CC-BY-NC 2.5). When you jump, gravity stops applying after you reach a stable height and you gliiiiide. (In other words, you jump and gravity only reduces your vertical velocity to zero.) Physics in Jump is slightly more forgiving than in the comic: you can still move around while in the air, so mistakes are less costly. This can be disabled.

Project available under GPLv3.