'Legend of the Beast' DLC coming to ... Serious Sam HD: Second Encounter?

Like one of those headless-yet-somehow-screaming dudes popping out of nowhere, Croteam has managed to surprise us with a DLC announcement today. Serious Sam HD: The Second Encounter will receive the Legend of the Beast DLC pack on May 15, extending the campaign and multiplayer experiences. The Legend of the Beast costs $4.99 and adds three new campaign missions, along with three new maps each for Brutal Survivor mode and Chaotic Versus mode. And again (weirdly), this is DLC for Serious Sam's second HD game, not the most recent Serious Sam 3.

In addition to the DLC, all Serious Sam HD: The Second Encounter's multiplayer modes – which include both co-operative and competitive-based modes – will be free for all through Steam on May 15. All you have to do is download the free, standalone multiplayer on or after May 15 and you're good to go.
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CROTEAM ANNOUNCES 'LEGEND OF THE BEAST' DLC PACK
FOR SERIOUS SAM HD: THE SECOND ENCOUNTER

- More Boomtacular Serious Sam Content Hitting PC on May 15th -

Zagreb, Croatia – Croteam and Devolver Digital have announced that fresh downloadable content for Serious Sam HD: The Second Encounter will hit the ol' personal computer on May 15th. Grab a fistful of rockets and step into the blood-soaked shoes of Sam "Serious" Stone as he tracks down the mysterious ram-god of The Great Obelisk in an all-new chapter of the legendary series. The 'Legend of the Beast' DLC pack will cost a paltry US $4.99 and includes:

Three New Campaign Missions
Three New Brutal Survival Mode Maps
Three New Chaotic Versus Mode Maps

"Our team is very excited to extend the world of the classic Serious Sam: The Second Encounter and we think the fans will really enjoy the news areas and scenarios we've put into Legend of the Beast," said Davor Hunski, Chief Creative Guy at developer Croteam.

In addition to the new content, Croteam and Devolver Digital will be making all Serious Sam HD: The Second Encounter's versus and survivor multiplayer modes free-to-play via Steam and available to download at no charge permanently starting May 15th. These free modes include Capture the Flag, Deathmatch, Team Deathmatch, Instant Kill, Last Man Standing, My Burden, Survival and Team Survival.

"Just the thought of all that extra cash is making me download some content into my pants," claimed Fork Parker, CFO of Devolver Digital, "Profit makes me horny."

For more information on Serious Sam games and various mundane communications follow @DevolverDigital and @Croteam on the Twitter-box. Follow @ForkParker for insanity.

Looking for friends you will never talk to in person? Boom: facebook.com/SeriousSamFan

This article was originally published on Joystiq.