I don't think you're serious enough. You're supposed to be serious. And who is better to teach you how to be serious than Serious Sam? Nobody, that's who.
Sam's next adventure, Serious Sam 3: BFE, has received a release date - he makes his return on October 18. Pre-orders are up on Steam, with the usual pre-order discount and an extra 10% off the price if you happen to own any of the old Serious Sam-games.
There's also a Digital Serious Edition available, if you're really serious about your Serious Sam-gaming, which includes the soundtrack, a digital artbook, some exclusive multiplayer characters and time limited access to some DLC-weapons.