During the design and the creation of Xpand Rally its developers were aiming towards completely new quality and realism level in a racing game. It�s obvious that the easiest way to achieve it is by realistic graphics. From the very beginning however the biggest attention was put on the realistic simulation of the dynamics of the game�s world. Because it�s most important part from the player�s point of view is the car � its physical simulation had to be designed extremely realistically and with maximum care for details. At the same time though car handling had to be fun and playable.

Below is a list and description of the most important elements that have decided about achieving the above goals.

CURVE EDITOR

Most of the parameters of the physics simulation has a nonlinear character and can be modeled with the help of curves. To make modifying those parameters easier we have developed a special tool for editing the shape of functions. Thanks to it one can easily and quickly examine and change the behavior of the car. As an example in this way one can modify the functions of friction depending on various parameters of the state of a tyre.