Demo versions help you try out all the functions before buying software. With a few tricks, you can even extend the test period. We show you how it works and what you need to bear in mind.

It’s essential for the tech experts who created the software to set aside their biases and work to understand what their customers need and want the product to do.

Live from the show floor at QuakeCon, we bring you exclusive demo material of id Software's upcoming title "RAGE", set for a September 2011 launch.