GOG Collection - Serious Sam Pack brings you Serious Sam: The First Encounter, Serious Sam: The Second Encounter, Serious Sam 4, Serious Sam: Siberian Mayhem and Serious Sam's Bogus Detour for a great price! Pack available only during the Summer Sale event! Serious Sam: The First Encounter In the near future, during their first interstellar travels, humans encounter a great evil that has been roaming the galaxy for the last few eons. This evil being is an incarnation of the last ancient immortal...