According to a comprehensive list compiled by Joystiq, studios planning premium downloadable content include Genki, which was revealed by Famitsu to be working on an expansion for its yet-unreleased WiiWare puzzler LONPOS. The add-on pack will run gamers 500 Wii Points ($5), half the price of LONPOS itself at 1000 Wii Points ($10).

Bandai Namco also revealed that it will sell additional stages for Kotoba no Puzzle Mojipittan Wii, another puzzle title for the WiiWare platform. Pricing for the content was not disclosed.

Madden creator Scott Orr told Develop that his upcoming WiiWare title Spogs Racing would feature "racer packs", which will include new car parts and tracks. Orr refers to the packs as "episodic downloadable content".

These confirmations lend further weight to suggestions that downloadable tracks for Vicarious Visions' Guitar Hero III: Legend of Rock will be made available for Wii owners sometime this year.

Similar to Nintendo's online Virtual Console storefront, which provides downloads of retro releases, WiiWare will allow Wii owners to purchase and download new, original games via the Wii Shop Channel. WiiWare goes live in Japan on March 25, and North America on May 12.