The latest add-on for Gears of War 3 is now available from Xbox LIVE Marketplace for 800 Microsoft Points. Forces of Nature adds five new multiplayer maps, each featuring unique weather conditions that will push your team to its limit.

In Aftermath you’ll slog through the streets of a sinking city as it floods, while Artillery has you fighting tornado-force winds in addition to your opponents. The heavy fog in Cover may help to obscure your movements, but provides your targets with the same advantage.

Jacinto’s torrential rains coupled with the risk of Imulsion exposure will make you pay for every inch of gained ground, and Raven Down’s unrelenting snow storms transform the battleground into an icy killing field.

Also included in the pack are 250 Achievement Points and four new multiplayer characters; including the Savage Hunter, as well as new variants of Commando Dom, Mechanic Baird, and the Savage Grenadier Elite.

If you don't have Gears of War 3 yet, it's now available for instant download via Games on Demand.