Serious Sam: Siberian - Mayhem Р‘рµр·рїр»р°с‚рѕрѕ Рёр·с‚рµрір»сџрѕ...

Frequently includes the Serious Sam franchise in charity bundles. System Requirements

is a standalone expansion that takes the high-octane action of the legendary shooter series to the frozen landscapes of Russia. If you're looking for information on how to get the game, Cold Front, Hot Action Frequently includes the Serious Sam franchise in charity

Use specialized gear like the Perun crossbow to take down the Mental’s hordes. Frequently includes the Serious Sam franchise in charity

Battle some of the largest enemy waves in the series’ history. Frequently includes the Serious Sam franchise in charity