: Includes 8 brand-new campaign maps, a new boss, and the Bright Island fan episode.
is a unified, enhanced version of the original Serious Sam Classic: The First Encounter (2001) and The Second Encounter (2002). Free Download Eligibility
: Uses an updated Serious Engine 1 with 64-bit compatibility , advanced shader support, and hundreds of bug fixes.
: Integrated achievements, leaderboards, and a Steam-powered server browser. Community Considerations Serious Sam Classics: Revolution on Steam
: Adds the Plasmagun and Minelayer originally from the popular Warped mod.
Serious Sam Classics: Revolution is for Steam users who already own both of the original (non-HD) titles: Serious Sam Classic: The First Encounter Serious Sam Classic: The Second Encounter