This week's Humble Weekly Sale collects just about every remake, sequel, and spinoff in Croteam's Serious Sam series as a pay-what-you-want compilation for Windows, Mac, and Linux.

The bundle's core package includes the unapologetically arcadey first-person shooters Serious Sam HD: The First Encounter and Serious Sam HD: The Second Encounter, along with a rarely-seen public test version of the original Serious Sam. Also included are Vlambeer's turn-based RPG Serious Sam: The Random Encounter, Mommy's Best Games' gun-stacking side-scroller Serious Sam Double D, and Be-Rad Entertainment's autoscrolling platformer Serious Sam: Kamikaze Attack.

Bundle buyers who beat the average purchase price (currently around $4) will also receive Serious Sam 2 and the Deluxe Edition of Serious Sam 3 BFE, which includes the Classic (non-HD) versions of The First Encounter and The Second Encounter, along with a downloadable soundtrack.

Serious Sam's Humble Weekly Sale ends on June 13.