DiRT 3. The DLC is 400 Microsoft Points ($4.99 USD) and available from Games for Windows Marketplace, Xbox Live Marketplace and PlayStation Network.
The X Games Asia Track Pack extends DiRT 3’s Rallycross content with two multi-surface, mud-spattered circuits set in stunning Shibuya, the neon heart of Tokyo. The X Games event is playable in single player, split-screen and online multiplayer. Gamers can take on the multi-track, multi-jump and multi-surface X Games event set around the LA Coliseum and test themselves on the snow and ice of Aspen, Colorado in DiRT 3’s Winter X Games event. Codemasters is also adjusting some of the game’s online playlists to accommodate the new DLC.
Codemasters has also released a trailer celebrating the DLC's release. Check it out in the video below.