: If you already own the original 2002 version of The Second Encounter on Steam, you are eligible to receive Serious Sam Classics: Revolution for free. This version includes updated versions of both the First and Second Encounter bundled together.
Since the game is not currently free, the most reliable way to get it at a minimal cost is through major digital storefronts: Serious Sam HD: The Second Encounter Free Game ...
While there is currently no official permanent "free" version of the full game, players can often access portions of for free or obtain it through specific digital ownership programs. Official Ways to Play for Free : If you already own the original 2002