Old-school shooters are the new, old thing, and that's OK. As one segment of the first-person market pushes toward realism, persistent profiles, and gun-based experience levels, the room for experiences pioneered in the 1990s grows. Some teams have made these titles their bread and butter, and Croteam, one of the best, is coming back to the table with a new Serious Sam game.

Serious Sam 4 is underway, and the duo of Croteam and publisher Devolver Digital want to make sure you are ready. The latest weekly Humble Bundle offers up every title in the Serious Sam series, including:

  • Serious Sam HD: The First Encounter
  • Serious Sam HD: The Second Encounter
  • Serious Sam: The Random Encounter
  • Serious Sam Double D
  • Serious Sam: Kamikaze Attack!
  • Serious Sam Public Test 2

For those that want the full package, Serious Sam 3: BFE and the non-HD Serious Sam 2 are available for paying more than the average (currently sitting at a paltry $4.25). For more on the Serious Sam Humble Bundle check out the (hilarious) promotional video below and head on over to the official site.