Combat-oriented expansion features four maps of increasing difficulty available this week for $5; narrative-focused Burial at Sea DLC lets gamers play as Elizabeth.

2K Games today announced "Clash in the Clouds," the first of three expansions coming to Irrational Games' first-person shooter BioShock Infinite.

Clash in the Clouds is available today on Steam for $5 and will come to Xbox Live and PlayStation Network later in the week.

The combat-focused Clash in the Clouds features 4 "brand new" maps with increasingly difficult enemies, as well as optional extended challenges. The expansion features 60 challenges in all, as well as new achievements and leaderboard support. Players can also unlock concept art, voxophones, kinetoscopes, and more by completing challenges.

Lead level designer Forrest Dowling told GameSpot that he doesn't expect all BioShock Infinite players to latch on to Clash in the Clouds, saying the content is aimed more at people who enjoyed the game's combat over its narrative.

"Clash in the Clouds was definitely made intentionally¥we knew that it wasn't going to be for 100 percent of people out there," lead level designer Forrest Dowling told GameSpot. "It was going to be for people who were really into the gameplay experience and that's what they want more of."

"This is a meta experience. It is not part of the BioShock story. It is just for fun."

Following in 2014 will be new BioShock Infinite expansions "Burial at Sea - Episode One" and "Burial at Sea - Episode Two." The content is narrative-driven, set in the original game's Rapture, and meant to tie the story of Elizabeth and Booker together.

Gameplay has been modified to give players an "original BioShock combat experience" that aims to meld the best parts of BioShock and BioShock Infinite. It will also include new weapons, new Plasmids/Vigors, Tears, Sky-Lines, and Big Daddies.

Finally, Burial at Sea - Episode Two will have gamers playing as Elizabeth "as she seeks to bring closure to her story" and the overall BioShock Infinite narrative. This content is also set in Rapture.

Episode One and Episode Two will sell for $15 each when they launch in 2014. All three expansions are included with the $20 BioShock Infinite DLC season pass.

GameSpot recently visited Irrational Games in Boston, Mass. and spoke with creative director Ken Levine. Check back later this week for more.

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