Serious Sam is a first-person shooter video game series that follows the adventures of protagonist Sam "Serious" Stone and his fight against the forces of the notorious extraterrestrial overlord Mental who seeks to destroy humanity. Key features

Beautifully rendered, high-resolution visuals and environments Frantic Non-Stop Action Great Arsenal - Wield demon-stopping revolvers, lead-spewing miniguns, and monstrous cannons for when you absolutely, positively, have to kill every enemy in sight! Co-Op Mode - Embrace the mayhem with up to 16 players in campaign mode

The series includes: Serious Engine Serious Sam: The First Encounter (2001) Serious Sam: The Second Encounter (2002) Spin-offs Serious Sam: Next Encounter (2004) Serious Sam Advance (2004) Fan-made Serious Sam Classics: Revolution (2014, early access) Serious Sam Origins (TBA) Serious Engine 2 Serious Sam 2 (2005) Serious Engine 3 Serious Sam HD: The First Encounter (2009) Serious Sam HD: The Second Encounter (2010) Serious Engine 3.5 Serious Sam 3: BFE (2011) Serious Engine 4 Serious Sam 4 (TBA) Indie games Serious Sam Double D (2011) Serious Sam: Kamikaze Attack! (2011) Serious Sam: The Random Encounter (2011) Serious Sam: The Greek Encounter (2012) Serious Sam Double D XXL (2013)