This isn't a sequel, but instead version 2.X of a game the authors worked on for several years… and it's more a case of turning a neat algorithm for maze drawing into game than setting out to make a game. You try to navigate through the (very large) maze from the upper left to the bottom right.

Numpad arrow keys turn your guy, Escape brings up the menu, and Home will show you the solution to the maze. Space and Return are used to toggle between the three views: Total maze, local maze, and 3D view.