"The First Encounter" was originally developed by Croteam as a demonstrator for their engine and this is the reason why some countries saw its initial release priced at less than half the price of other games in the genre.In ancient times, Earth was involved in a massive conflict between Mental, an evil extraterrestrial being who wants to rule the universe, and the Sirians, a technologically advanced sentient alien race that left many of its artefacts to be discovered by humanity.