Rockstar is busy expanding its Western open-world epic Red Dead Remption with more post-release content. Four offerings of downloadable add-on content are due out through the remainder of this year, beginning with the “Legends and Killers” pack in August.

Rockstar has given us a brief overview of what each pack will bring. New modes, maps, characters, weaponry, and even zombies are among the additions. Those itching to sink more time into Rockstar’s wild west romp are in for a treat. Look past the break for a full breakdown.

Legends and Killers Pack (August 2010, $9.99 / 800 MS Points)
* New active map locations, characters and more:
* 9 new multiplayer map locations — more than doubling the amount of territories in the multiplayer competitive modes;
* 8 new multiplayer characters — play as characters from Red Dead Revolver;
* Introducing a new projectile weapon: the Tomahawk, with corresponding challenges for single-player and multiplayer gameplay;
* New achievements and trophies;

Liars and Cheats Pack (TBC, $9.99 / 800 MS Points)
* New competitive modes, multiplayer mini-games in Free Roam, and more:
* Attack and Defend multiplayer competitive mode and challenges;
* New multiplayer horse races, complete with mounted combat;
* Play as the heroes and villains of Red Dead Redemption, as well as 8 additional multiplayer characters;
* Multiplayer versions of Liars Dice and Poker from the single-player game;
* Introducing a new weapon: the Explosive Rifle, with associated challenges available in single-player and multiplayer gameplay;
* New achievements and trophies;

Free Roam Pack (Release date / pricing TBC)
* Delve deeper into the world of Red Dead Redemption with new modes, challenges and gang hideouts to discover:
* Additional Free Roam challenges;
* New action areas and defensive placements;
* Posse scoring and leaderboards;
* New anti-griefing measures in Free Roam;

Undead Nightmare Pack (Release date TBC, $9.99 / 800 MS Points)
* Ghost towns and cemeteries come alive in a West gone horribly wrong:
* Brand new single-player adventure, challenges and quests;
* 8 new multiplayer zombie characters;
* Additional animals unleashed in the world;
* New dynamic events and more;

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