Mahjong, astrology, zombies and dolphins rule supreme in this week's selection of games.

This week's updates brings us another eclectic selection of games for WiiWare and DSiWare, though once again no Virtual Console games were were added to the service.

WiiWare sees two demos in this week's update. The first of these is Zombie Panic in Wonderland, an action/shooting game developed by Akaoni where players can destroy legions of the undead as anime characters in a fairy tale setting. Racers' Islands: Crazy Racers from ZALLAG is the second demo of the week. In this game, a diverse group of racers compete in various races in order to be the best. Both of these demos are available for download, free of charge ($0), and for a limited time.

The system's first update will make the shop a reality worldwide.

The 3DS's eShop won't be available in any region until May when the first system update will be made available, according to Nintendo President Satoru Iwata in last week's investors meeting.

On that same date, the web browser will also be available for download, and players will be able to transfer their DSiWare purchases to the system. Both Super Mario Land and The Legend of Zelda: DX have been confirmed as some of the first titles available for purchase. 3DSWare will also be available, though there have been no announcements about 3DSWare titles. 

Iwata believes that the Ubisoft dance title was one of the most important titles of 2010.

Nintendo has announced via their quarterly financial statement that they will be publishing two third party Wii titles in Japan: Activision's GoldenEye and Ubisoft's Just Dance 2. The success of Just Dance 2 prompted Nintendo to publish the title overseas. Nintendo Co. Ltd. President Satoru Iwata believes that Just Dance 2 was one of the more important Wii titles in 2010, outperforming Donkey Kong Country Returns in November and December in North America.

This wouldn't be the first time Nintendo has published third party titles in Japan. Sega's  two Mario and Sonic at the Olympic Games titles were published in Japan by Nintendo. In addition, Nintendo published Harvest Moon: Tree of Tranquility in Australia.

Battle & Get! Pokémon Typing DS will ship with a Bluetooth keyboard.

Nintendo has confirmed an upcoming Nintendo DS game called Battle & Get! Pokémon Typing DS. Originally announced last September at Nintendo Conference, the game is designed to appeal to Pokémon fans of all ages who would like to improve their typing.

The game card has a Bluetooth receiver built in, and the game will come packaged with a Bluetooth Keyboard. Battle & Get! Pokémon Typing DS has been designed to be challenging even for adults who are very proficient at typing.

As part of their investor conference, three mini-games were shown.

During today's investor briefing, Nintendo has released a new trailer for the Wii edition of Rhythm Tengoku (Heaven).

The trailer shows three new mini-games: using a fork to stab beans that were flicked from the other end of a table, a samurai chopping demons in rhythm with how their eyes appear in a dark cloud, and a game of tennis played between two airplanes.

Rhythm Tengoku for Wii will be released in Japan later this year. No release details are currently available for other regions.

There's still hope for these currently Japan-only titles.

Monado: Beginning of the World, which is known as Xenoblade in Japan, and Line Attack Heroes appeared on a North American release schedule during Nintendo's investors meeting in Japan today.

The two games weren't given any solid release date, merely appearing on the list next to The Legend of Zelda: Skyward Sword as two other games with a "TBA" (to be announced) release date. However, this doesn't necessarily confirm a North American release.

Monado, which was released last June in Japan, is an RPG from Monolith Soft. Line Attack Heroes, which was playable at E3 2009, was downgraded from a retail release to a WiiWare title, and debuted last July in Japan.

The upcoming title will again feature the inhaled power of Kirby's enemies.

Nintendo announced a new Kirby Wii title at an investors meeting in Japan today.

The title, developed by longtime Kirby developers HAL Laboratory, will return to Kirby's old style of gameplay. Last year, Kirby starred in Kirby's Epic Yarn, which didn't feature the inhalation mechanics of older Kirby games.

Nintendo is planning to release the title in Japan this year. There has been no news yet regarding a worldwide release.

The trailer below was presented to investors. While the game appears similar to other HAL-developed games, more devastating versions of Kirby's powers, such as a giant sword, are demonstrated.

And that's about all we know.

Pandora's Tower, a new game for Wii from Nintendo, was announced at a Nintendo investors meeting in Japan today.

A teaser site has been opened, with the following mysterious words:

Pandora's Tower Until I Return to Where You AreWho's happier? The person who dies beautiful or the person that lives ugly?Scheduled for Release Spring 2011

Not much else was said about the title, other than that it is nearly finished and will release in Spring in Japan. The company plans to gradually release more information about it over the next couple months.

Even on full brightness, battery life can be extended by 10 to 20 percent. 

In the latest edition of Iwata Asks, our omnipresent Nintendo President tells about the power-saving mode for the Nintendo 3DS. It uses less power for the backlight when the pixels themselves are darker shades.

Internal testing with the mode off gave the three-hour battery life figure we have all come to know, but when this power-save mode was enabled, the team got 10 to 20 percent more battery life when the backlight was on the brightest setting. With the lowest brightness, the battery lasted five hours, and turning this power-save mode on or off did not make much of a difference.

Nintendo will be responsible for sales, distribution, and marketing in Europe and Australia. 

Nintendo and Capcom have signed a distribution agreement for Super Street Fighter IV 3D Edition on the Nintendo 3DS. Nintendo will handle sales, marketing, and distribution of the launch title, which is due for release on March 25 for Europe. The distribution agreement additionally covers Australia. Capcom remains as the publisher of the game.

One difference in Nintendo-distributed games for Wii and DS is that they are eligible for Club Nintendo Stars, and the box includes a card with a redemption code.