When the New Xbox Experience and its many new features hits Xbox 360s worldwide this Wednesday, November 19, the system will also receive its first downloadable game with support for the new Avatars: NinjaBee's city-builder A Kingdom for Keflings.

Priced at 800 Microsoft Points ($8), the latest Xbox Live Arcade title from the Band of Bugs and Cloning Clyde developer lets up to four online players run around, collecting resources and directing the diminutive keflings in their attempts to transform a village into a city while adapting with the constantly changing seasons.

In addition, several previously released Xbox Live Arcade games, including Bomberman Live and UNO, will be updated with support for Avatars come Wednesday.

Bizarre Creations' multi-directional shooter sequel Geometry Wars Retro Evolved 2 is now slated to hit Xbox 360 next Wednesday, July 30, the studio has announced.

Revealed last week, the downloadable Xbox Live Arcade exclusive was initially scheduled to debut on August 6, and will carry the price of 800 Microsoft Points ($10). For more on the game, check out our hands-on preview from the E3 show floor.

While Microsoft has yet to detail specific dates for upcoming Xbox Live Arcade releases, the company has informed Shacknews that Castle Crashers, Bionic Commando Rearmed, Galaga Legions and Jonathon Blow's time-shifting platformer Braid are all slated to arrive by September 21.

Microsoft today issued more details on the Xbox 360's upcoming Community Games program, which will allow independent developers to release downloadable Xbox 360 games through the Xbox Live Marketplace later this year.

Developed using the Microsoft-issued XNA software, the games will be priced depending on their size. 50MB titles will go for 200 Microsoft Points ($2.50), with 150 MB games going for either 400 ($5) or 800 Microsoft Points ($10).

In terms of royalties, game creators will receive 70% of the title's total sales revenue, though an additional 10-30% may be subtracted based on promotional fees.

Developers are not able to opt out of the royalty-cutting promotions... Read more

Confirming the game's listing on the ESRB's website yesterday, UK-based developer Introversion officially announced Darwinia+ for Xbox Live Arcade this afternoon.

Aimed for a fall 2008 release, Darwinia+ will feature both the original 2005 cult favorite Darwinia, plus Multiwinia: Survival of the Flattest, an upcoming multiplayer variant of the title.

"Multiwinia is the natural conclusion of what we started with Darwinia way back in 2002 and, with the launch of Live Arcade, Microsoft has presented us with a fantastic opportunity to get onto a rung of the console ladder," Introversion said on its forums. "We're really looking forward to introducing Darwinia+ to a whole new audience."

The studio also noted that Multiwinia is still poised for a PC release. No price point or further details were released, but Introversion promised more updates in the near future.

Much to the delight of series fans worldwide (pictured left), everyone's favorite block-buster Mr. Driller is on his way to Xbox 360.

Microsoft and publisher Namco Bandai confirmed the title's existence on the official Japanese Xbox site, which included several slightly fuzzy screenshots.

The downloadable Xbox Live Arcade puzzle-action title sports both six playable characters across its single-player and four-person online multiplayer modes.

The specialized Quest Driller mode provides solo players with additional challenge beyond the traditional race to the bottom, while Tag Battle, which is new to the series, requires players to work together for victory.

Mr. Driller Online is slated to arrive in Japan this spring. While a North American release has not been announced, the abundance of English text in the tutorial shots indicates an English localization is well underway, suggesting the possibility of simultaneous worldwide release a la most Xbox Live Arcade titles.