Note: When you purchase Revolution you get Serious Sam Classic: The First Encounter and Serious Sam Classic: The Second Encounter.Serious Sam is a high-adrenaline arcade-action shooter heavily focused on frantic arcade-style single player action. In a world where cyberpunk meets fantasy-fiction and advanced technology is mixed with black magic and psycho-powers, Sam travels through the beautiful world of ancient Egypt and several diverse planets, confronting countless Mental's minions on his way to the Mental's base.Key FeaturesFrantic Arcade-Style Action - Fight your way through 15+ nightmarish warriors in Mental's army, including the charging Sirian Werebull, screaming Headless Kamikaze and other crazy monsters, and finally challenge the multi-story Ugh-Zan boss!Various Environments and Secrets - Unleash mayhem in ancient Egypt. Discover over 80 secrets hidden in the fray!Special Weapons and Power-Ups - Wreak havoc with a huge arsenal of weapons including Double Shotgun, Rocket Launcher, Minigun and Cannon!Co-Op Multiplayer - Embrace the mayhem with up to 16 players!Versus Multiplayer – Drop the gauntlet and let the heavy ordinance fly in incredible Deathmatch and Scorematch! Split Screen – Huddle up with up to 4-player local split screen co-op and versus modes! Level Editor – Create your own levels, MODs, textures and other content with the inclusion of the fully featured Serious Editor and Serious Modeller!