Vox 2: Incursion is a Keen 3 mod by Grelphy. It is the second episode of the abandoned Vox trilogy. After disabling the Voxian command ship and hacking its computer, Keen was able to determine the location of Mortimer's secret base at the end of the previous episode. Now, Keen journeys to the base on Gnosticus IV in order to destroy it and stop his nemesis from creating more Voxians.
Vox was first announced by Grelphy in late 2003 and planned to be released in mid-2005, which did not happen. The mods were eventually abandoned, but the author made the beta versions of the nearly finished trilogy available to the public in July 2008.