Two new Xbox 360 demos have been added to the Xbox Live Marketplace. Unfortunately for gamers in North America, these free demos are not available on the U.S. Marketplace.

First is the Japan-only demo for Guilty Gear 2: Overture. This Xbox 360 title from Arc System Works is the first title in the fighting series to utilize 3D graphics. The demo description describes the game as a mix between the action and RTS genres.

A North American release date for Guilty Gear 2: Overture has yet to be announced. It's currently slated for a November 29 release in Japan.

Next up is the Looney Tunes: ACME Arsenal demo. Available only in European Xbox Live regions, Looney Tunes: ACME Arsenal is a 3d action/adventure title based on the classic Looney Tunes series. Looney Tunes: ACME Arsenal is now out in the U.S. A demo for the game was released on the U.S. Marketplace early this month.