Unlimited Simulator is not a game. It's a basis to create whatever simulations you want, from games to scientific simulations. You only have to worry about physics, controls and how the world looks like. It can be at the same time a car simulator, a spaceships war game, or a scientific simulation. While you can do these things on their own, Unlimited Simulator provides the ability to do all three at once. It allows interaction of completely different kinds of clients, thus achieving unprecedent realism and complexity.
vplot is a set of Linux routines and programs for plotting on vintage Tek 4010, 4012, 4014, and 4016 storage tube terminals. They can also be used to some extent with xterm's tek emulation. It includes a program that supports a fast parallel interface to the Tek minibus using the Linux parallel port. These are personal routines, not the official Tek Plot10 code.
gtkform is a gtk+ container that resembles the Motif XmFormWidget's behavor. For every edge (side) of a widget, you can assign an attachment. These attachments can be relative to the form or to another widget. The attachments determine the layout behavior of the form when resizing occurs.