Major Nelson has informed Xboxers that the Halo 3 Heroic Map pack, containing 3 new multiplayer maps, is now available for free from the Xbox Live Marketplace.

Standoff
The symmetrical valley of Standoff, with its entrenched bases and fields of boulders is ideal for mid-sized objective and Slayer game types.

Rat’s Nest
The vast, labyrinthine passages of the Rat’s Nest bring something completely new to the multiplayer experience: an indoor vehicle paradise. Strongly influenced by the Campaign mode, this map is ideal for big team battles.

Foundry
Foundry is the ultimate Forge map. Players can edit every single object in this voluminous industrial warehouse, placing stairways, walls, bridges, and tunnels to create an entirely new play space and build almost any kind of map imaginable.

Exiting stuff, although it’s a shame that Halo 3 is such an average game.

Source: http://snipurl.com/heroicfree