Humble Bundle has started selling THE serious sam bundle that allows you to get the Serious Sam series of FPS. $1 1 (4 items) $10 10 (14 items) $20 20 (17 items) In this bundle, you can get a lot of Serious Sam series, which is attractive to shoot a gun and defeat many enemies. In addition to the main series such as the latest work Serious Sam 4 and the official standalone version of the fan MOD Serious Sam: siberian mayhem , there are 17 minor spinoff works such as Serious Sam: TORMENT AL and I Hate Running Backwards. You can get items from $1. $1 1 (4 items) Serious Sam Classics: Revolution Serious Sam: The Random Encounter Serious Sam: Kamikaze Attack Serious Sam Double D XXL $10 10 (14 items) Serious Sam HD: The First Encounter Serious Sam HD: The Second Encounter Serious Sam HD: The Second Encounter-Legends of the Beast Serious Sam HD: The Second Encounter-Serious 8 DLC Serious Sam 2 Serious Sam 3: BFE Serious Sam 3: Jewel of the Nile ...